19918

Names of 19918

• Cardinal: 19918 can be written as Nineteen thousand, nine hundred eighteen.

Scientific notation

• Scientific notation: 1.9918 × 10⁴

Factors of 19918

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 458

Divisors of 19918

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 23 46 433 866 9959 19918
• Sum of all divisors σ(n): 31248
• Sum of proper divisors (its aliquot sum) s(n): 11330
• 19918 is a deficient number, because the sum of its proper divisors (11330) is less than itself. Its deficiency is 8588

Bases of 19918

• Binary: 100110111001110₂
• Hexadecimal: 0x4DCE
• Base-36: FDA

Squares and roots of 19918

• 19918 squared (19918²) is 396726724
• 19918 cubed (19918³) is 7902002888632
• The square root of 19918 is 141.1311446847
• The cube root of 19918 is 27.1070283101

Scales and comparisons

• 19,918 seconds is equal to 5 hours, 31 minutes, 58 seconds.
• To count from 1 to 19,918 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 19918 cubic inches would be around 2.3 feet tall.

Recreational maths with 19918

• 19918 backwards is 81991
• The number of decimal digits it has is: 5
• The sum of 19918's digits is 28
• More coming soon!