18129599808

Names of 18129599808

• Cardinal: 18129599808 can be written as Eighteen billion, one hundred twenty-nine million, five hundred ninety-nine thousand, eight hundred eight.

Scientific notation

• Scientific notation: 1.8129599808 × 10¹⁰

Factors of 18129599808

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 2552069

Divisors of 18129599808

• Number of divisors d(n): 56
• Complete list of divisors:
  1 2 3 4 6 8 12 16 24 32 37 48 64 74 96 111 148 192 222 296 444 592 888 1184 1776 2368 3552 7104 2552027 5104054 7656081 10208108 15312162 20416216 30624324 40832432 61248648 81664864 94424999 122497296 163329728 188849998 244994592 283274997 377699996 489989184 566549994 755399992 1133099988 1510799984 2266199976 3021599968 4532399952 6043199936 9064799904 18129599808
• Sum of all divisors σ(n): 49264348512
• Sum of proper divisors (its aliquot sum) s(n): 31134748704
• 18129599808 is an abundant number, because the sum of its proper divisors (31134748704) is greater than itself. Its abundance is 13005148896

Bases of 18129599808

• Binary: 10000111000100110111011110101000000₂
• Hexadecimal: 0x4389BBD40
• Base-36: 8BTW8QO

Squares and roots of 18129599808

• 18129599808 squared (18129599808²) is 328682389198233636864
• 18129599808 cubed (18129599808³) is 5958880180101277816828716122112
• The square root of 18129599808 is 134646.2023526843
• The cube root of 18129599808 is 2627.0161289045

Scales and comparisons

• 18,129,599,808 seconds is equal to 576 years, 24 weeks, 1 day, 7 hours, 56 minutes, 48 seconds.
• To count from 1 to 18,129,599,808 would take you about one thousand, one hundred fifty-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 18129599808 cubic inches would be around 218.9 feet tall.

Recreational maths with 18129599808

• 18129599808 backwards is 80899592181
• The number of decimal digits it has is: 11
• The sum of 18129599808's digits is 60
• More coming soon!