1091

1,091 is a prime number. Like all primes greater than two, it is odd and has no factors apart from itself and one.

What does the number 1091 look like?

As a prime, it is not composed of any other numbers and has no internal structure.

1091 is a prime number. Like all primes (except two), it is an odd number.

Prime factorization of 1091:

1091

See below for interesting mathematical facts about the number 1091 from the Numbermatics database.


Names of 1091

  • Cardinal: 1091 can be written as One thousand and ninety-one.

Scientific notation

  • Scientific notation: 1.091 × 103

Factors of 1091

  • Number of distinct prime factors ω(n): 1
  • Total number of prime factors Ω(n): 1
  • Sum of prime factors: 1091

Divisors of 1091

  • Number of divisors d(n): 2
  • Complete list of divisors:
  • Sum of all divisors σ(n): 1092
  • Sum of proper divisors (its aliquot sum) s(n): 1
  • 1091 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 1090

Bases of 1091

  • Binary: 100010000112
  • Hexadecimal: 0x443
  • Base-36: UB

Squares and roots of 1091

  • 1091 squared (10912) is 1190281
  • 1091 cubed (10913) is 1298596571
  • The square root of 1091 is 33.0302891299
  • The cube root of 1091 is 10.2945709285

Scales and comparisons

How big is 1091?
  • 1,091 seconds is equal to 18 minutes, 11 seconds.
  • To count from 1 to 1,091 would take you about eighteen minutes.

    This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

  • A cube with a volume of 1091 cubic inches would be around 0.9 feet tall.

Recreational maths with 1091

  • 1091 backwards is 1901
  • 1091 is a twin prime! Its twin is 1093
  • The number of decimal digits it has is: 4
  • The sum of 1091's digits is 11
  • More coming soon!

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The information we have on file for 1091 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!

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