138873862491

Names of 138873862491

• Cardinal: 138873862491 can be written as One hundred thirty-eight billion, eight hundred seventy-three million, eight hundred sixty-two thousand, four hundred ninety-one.

Scientific notation

• Scientific notation: 1.38873862491 × 10¹¹

Factors of 138873862491

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 1635

Divisors of 138873862491

• Number of divisors d(n): 72
• Complete list of divisors:
  1 3 7 13 21 29 39 49 87 91 147 203 273 377 609 637 1131 1421 1583 1911 2639 4263 4749 7917 11081 18473 20579 33243 45907 55419 61737 77567 137721 144053 232701 321349 432159 596791 964047 1008371 1790373 2249443 2505889 3025113 4177537 6748329 7517667 12532611 17541223 29242759 32576557 52623669 72670781 87728277 97729671 122788561 218012343 228035899 368365683 508695467 684107697 944720153 1526086401 1596251293 2834160459 3560868269 4788753879 6613041071 10682604807 19839123213 46291287497 138873862491
• Sum of all divisors σ(n): 240115614480
• Sum of proper divisors (its aliquot sum) s(n): 101241751989
• 138873862491 is a deficient number, because the sum of its proper divisors (101241751989) is less than itself. Its deficiency is 37632110502

Bases of 138873862491

• Binary: 10000001010101100001101111100101011011₂
• Hexadecimal: 0x205586F95B
• Base-36: 1RSPWU3F

Squares and roots of 138873862491

• 138873862491 squared (138873862491²) is 19285949683169176725081
• 138873862491 cubed (138873862491³) is 2678314324308781265608576504836771
• The square root of 138873862491 is 372657.8356763749
• The cube root of 138873862491 is 5178.5340744729

Scales and comparisons

• 138,873,862,491 seconds is equal to 4,415 years, 39 weeks, 3 days, 8 hours, 54 minutes, 51 seconds.
• To count from 1 to 138,873,862,491 would take you about eight thousand, eight hundred thirty-one 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 138873862491 cubic inches would be around 431.5 feet tall.

Recreational maths with 138873862491

• 138873862491 backwards is 194268378831
• The number of decimal digits it has is: 12
• The sum of 138873862491's digits is 60
• More coming soon!