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1791

Number 1791: Properties, Factors, and Mathematical Facts

Short answer

The number 1791 is an odd composite number with 6 positive divisors. Its prime factorization is 3² × 199. It is also a deficient number, which gives it several notable mathematical relationships.

Is 1791 prime?

ClassificationCompositeParityOddDivisor count6AbundanceDeficient

What is the prime factorization of 1791?

Prime factorization

1791 =
3 squared times 199
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What are the divisors of 1791?

Divisor count

6

Divisor sum

2,600

Proper divisor sum

809
  • 1
  • 3
  • 9
  • 199
  • 597
  • 1791
Learn more →Learn more →

How is 1791 classified?

Prime

CompositeLearn more →

Perfect square

No

Perfect cube

No

Fibonacci

No

Triangular

No

Power of two

No
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How is 1791 represented in other numeral systems?

Decimal

1791

Binary

11011111111
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Octal

3377

Hexadecimal

6FF
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Roman

MDCCXCILearn more →

In words

one thousand seven hundred ninety one

Roots and powers

Square root

42.320208 Approximate

Cube root

12.144096 Approximate

Nearest lower square

1764

Nearest higher square

1849

Nearest lower cube

1728

Nearest higher cube

2197

What are the digit properties of 1791?

Digit count

4

Digit sum

18Learn more →

Digit product

63

Digital root

9

Reversed number

1971

Which numbers are related to 1791?

1790· Previous1792· Next1789· Previous prime1801· Next prime3· Prime factor199· Prime factor1764· Lower square1849· Higher square1770· Previous triangular1830· Next triangular3582· Double1971· Reverse

Why these results are true

  • 1791 is composite because it has positive divisors other than 1 and itself.

Compare this number

FAQ for 1791

Is 1791 prime?
No
What is the prime factorization of 1791?
3² × 199
Is 1791 a perfect square?
No
What is 1791 in binary?
11011111111
What is 1791 in Roman numerals?
MDCCXCI

Read calculation methodology