18438719715

Names of 18438719715

• Cardinal: 18438719715 can be written as Eighteen billion, four hundred thirty-eight million, seven hundred nineteen thousand, seven hundred fifteen.

Scientific notation

• Scientific notation: 1.8438719715 × 10¹⁰

Factors of 18438719715

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 8679

Divisors of 18438719715

• Number of divisors d(n): 96
• Complete list of divisors:
  1 3 5 9 13 15 27 39 45 65 81 117 135 137 195 243 351 405 411 585 685 1053 1215 1233 1755 1781 2055 3159 3699 5265 5343 6165 8521 8905 11097 15795 16029 18495 25563 26715 33291 42605 48087 55485 76689 80145 110773 127815 144261 166455 230067 240435 332319 383445 432783 553865 690201 721305 996957 1150335 1167377 1661595 2070603 2163915 2990871 3451005 3502131 4984785 5836885 8972613 10353015 10506393 14954355 15175901 17510655 26917839 31519179 44863065 45527703 52531965 75879505 94557537 134589195 136583109 157595895 227638515 283672611 409749327 472787685 682915545 1229247981 1418363055 2048746635 3687743943 6146239905 18438719715
• Sum of all divisors σ(n): 35958476736
• Sum of proper divisors (its aliquot sum) s(n): 17519757021
• 18438719715 is a deficient number, because the sum of its proper divisors (17519757021) is less than itself. Its deficiency is 918962694

Bases of 18438719715

• Binary: 10001001011000010001000100011100011₂
• Hexadecimal: 0x44B0888E3
• Base-36: 8GXXR6R

Squares and roots of 18438719715

• 18438719715 squared (18438719715²) is 339986384728329681225
• 18438719715 cubed (18438719715³) is 6268913654921827412223072850875
• The square root of 18438719715 is 135789.2474204051
• The cube root of 18438719715 is 2641.8627672041

Scales and comparisons

• 18,438,719,715 seconds is equal to 586 years, 15 weeks, 2 days, 2 hours, 35 minutes, 15 seconds.
• To count from 1 to 18,438,719,715 would take you about one thousand, one hundred seventy-two 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 18438719715 cubic inches would be around 220.2 feet tall.

Recreational maths with 18438719715

• 18438719715 backwards is 51791783481
• The number of decimal digits it has is: 11
• The sum of 18438719715's digits is 54
• More coming soon!