18408729339

Names of 18408729339

• Cardinal: 18408729339 can be written as Eighteen billion, four hundred eight million, seven hundred twenty-nine thousand, three hundred thirty-nine.

Scientific notation

• Scientific notation: 1.8408729339 × 10¹⁰

Factors of 18408729339

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 465

Divisors of 18408729339

• Number of divisors d(n): 108
• Complete list of divisors:
  1 3 7 9 11 13 21 33 39 63 77 91 99 117 121 143 231 273 363 429 431 693 819 847 1001 1089 1287 1293 1573 2541 3003 3017 3879 4719 4741 5603 7623 9009 9051 11011 14157 14223 16809 27153 33033 33187 39221 42669 50427 52151 61633 99099 99561 117663 156453 184899 185761 298683 352989 365057 431431 469359 554697 557283 677963 1095171 1294293 1300327 1671849 2033889 2043371 2414893 3285513 3882879 3900981 4745741 6101667 6130113 7244679 11702943 14237223 14303597 16904251 18390339 21734037 22477081 26563823 42711669 42910791 50712753 67431243 79691469 128732373 152138259 157339567 185946761 202293729 239074407 292202053 472018701 557840283 876606159 1416056103 1673520849 2045414371 2629818477 6136243113 18408729339
• Sum of all divisors σ(n): 36055902064
• Sum of proper divisors (its aliquot sum) s(n): 17647172725
• 18408729339 is a deficient number, because the sum of its proper divisors (17647172725) is less than itself. Its deficiency is 761556614

Bases of 18408729339

• Binary: 10001001001001111101110101011111011₂
• Hexadecimal: 0x4493EEAFB
• Base-36: 8GG2YGR

Squares and roots of 18408729339

• 18408729339 squared (18408729339²) is 338881315876559376921
• 18408729339 cubed (18408729339³) is 6238374422015745104301172185219
• The square root of 18408729339 is 135678.7726175323
• The cube root of 18408729339 is 2640.4296696493

Scales and comparisons

• 18,408,729,339 seconds is equal to 585 years, 17 weeks, 4 days, 23 hours, 55 minutes, 39 seconds.
• To count from 1 to 18,408,729,339 would take you about one thousand, one hundred seventy 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 18408729339 cubic inches would be around 220 feet tall.

Recreational maths with 18408729339

• 18408729339 backwards is 93392780481
• The number of decimal digits it has is: 11
• The sum of 18408729339's digits is 54
• More coming soon!