18993

18,993 is an odd composite number composed of three prime numbers multiplied together.

What does the number 18993 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 8 divisors.

18993 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of eight divisors.

Prime factorization of 18993:

3 × 13 × 487

See below for interesting mathematical facts about the number 18993 from the Numbermatics database.


Names of 18993

  • Cardinal: 18993 can be written as Eighteen thousand, nine hundred ninety-three.

Scientific notation

  • Scientific notation: 1.8993 × 104

Factors of 18993

  • Number of distinct prime factors ω(n): 3
  • Total number of prime factors Ω(n): 3
  • Sum of prime factors: 503

Divisors of 18993

  • Number of divisors d(n): 8
  • Complete list of divisors:
  • Sum of all divisors σ(n): 27328
  • Sum of proper divisors (its aliquot sum) s(n): 8335
  • 18993 is a deficient number, because the sum of its proper divisors (8335) is less than itself. Its deficiency is 10658

Bases of 18993

  • Binary: 1001010001100012
  • Hexadecimal: 0x4A31
  • Base-36: ENL

Squares and roots of 18993

  • 18993 squared (189932) is 360734049
  • 18993 cubed (189933) is 6851421792657
  • The square root of 18993 is 137.8150935131
  • The cube root of 18993 is 26.6807391003

Scales and comparisons

How big is 18993?
  • 18,993 seconds is equal to 5 hours, 16 minutes, 33 seconds.
  • To count from 1 to 18,993 would take you about five hours.

    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 18993 cubic inches would be around 2.2 feet tall.

Recreational maths with 18993

  • 18993 backwards is 39981
  • The number of decimal digits it has is: 5
  • The sum of 18993's digits is 30
  • More coming soon!

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The information we have on file for 18993 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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