18638495128125

Names of 18638495128125

• Cardinal: 18638495128125 can be written as Eighteen trillion, six hundred thirty-eight billion, four hundred ninety-five million, one hundred twenty-eight thousand, one hundred twenty-five.

Scientific notation

• Scientific notation: 1.8638495128125 × 10¹³

Factors of 18638495128125

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 8589

Divisors of 18638495128125

• Number of divisors d(n): 90
• Complete list of divisors:
  1 3 5 9 15 25 27 45 75 81 125 135 225 375 405 625 675 1125 1875 2025 3125 3375 5625 8581 9375 10125 16875 25743 28125 42905 50625 77229 84375 128715 214525 231687 253125 386145 643575 695061 1072625 1158435 1930725 3217875 3475305 5363125 5792175 9653625 16089375 17376525 26815625 28960875 48268125 73633561 80446875 86882625 144804375 220900683 241340625 368167805 434413125 662702049 724021875 1104503415 1840839025 1988106147 2172065625 3313510245 5522517075 5964318441 9204195125 9940530735 16567551225 27612585375 29821592205 46020975625 49702653675 82837756125 138062926875 149107961025 230104878125 248513268375 414188780625 690314634375 745539805125 1242566341875 2070943903125 3727699025625 6212831709375 18638495128125
• Sum of all divisors σ(n): 34805191477518
• Sum of proper divisors (its aliquot sum) s(n): 16166696349393
• 18638495128125 is a deficient number, because the sum of its proper divisors (16166696349393) is less than itself. Its deficiency is 2471798778732

Bases of 18638495128125

• Binary: 100001111001110011100111000011001101000111101₂
• Hexadecimal: 0x10F39CE19A3D
• Base-36: 6LUEMRMT9

Squares and roots of 18638495128125

• 18638495128125 squared (18638495128125²) is 347393500641139360166015625
• 18638495128125 cubed (18638495128125³) is 6474892069242165028403461917755126953125
• The square root of 18638495128125 is 4317232.3458582815
• The cube root of 18638495128125 is 26513.6965523721

Scales and comparisons

• 18,638,495,128,125 seconds is equal to 592,646 years, 25 weeks, 4 days, 5 hours, 48 minutes, 45 seconds.
• To count from 1 to 18,638,495,128,125 would take you about one million, four hundred eighty-one thousand, six hundred sixteen years!

  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 18638495128125 cubic inches would be around 2209.5 feet tall.

Recreational maths with 18638495128125

• 18638495128125 backwards is 52182159483681
• The number of decimal digits it has is: 14
• The sum of 18638495128125's digits is 63
• More coming soon!