13912031991

Names of 13912031991

• Cardinal: 13912031991 can be written as Thirteen billion, nine hundred twelve million, thirty-one thousand, nine hundred ninety-one.

Scientific notation

• Scientific notation: 1.3912031991 × 10¹⁰

Factors of 13912031991

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 145

Divisors of 13912031991

• Number of divisors d(n): 108
• Complete list of divisors:
  1 3 11 13 17 33 39 51 101 121 143 187 221 289 303 363 429 561 663 867 1111 1313 1573 1717 2057 2431 3179 3333 3757 3939 4719 5151 6171 7293 9537 10201 11271 12221 14443 18887 22321 26741 29189 30603 34969 36663 41327 43329 56661 66963 80223 87567 104907 112211 123981 132613 158873 173417 207757 245531 321079 336633 379457 397839 454597 476619 520251 623271 736593 963237 1138371 1234321 1363791 1458743 1907587 2254421 2700841 2948089 3531869 3702963 4174027 4376229 5722761 6763263 8102523 8844267 10595607 12522081 16046173 20983457 24798631 32428979 38325157 45914297 48138519 62950371 74395893 97286937 114975471 137742891 272784941 356718769 421576727 818354823 1070156307 1264730181 4637343997 13912031991
• Sum of all divisors σ(n): 23558180408
• Sum of proper divisors (its aliquot sum) s(n): 9646148417
• 13912031991 is a deficient number, because the sum of its proper divisors (9646148417) is less than itself. Its deficiency is 4265883574

Bases of 13912031991

• Binary: 1100111101001110001100001011110111₂
• Hexadecimal: 0x33D38C2F7
• Base-36: 6E2V4L3

Squares and roots of 13912031991

• 13912031991 squared (13912031991²) is 193544634118607424081
• 13912031991 cubed (13912031991³) is 2692599141544456572184975775271
• The square root of 13912031991 is 117949.2771957505
• The cube root of 13912031991 is 2405.0836681199

Scales and comparisons

• 13,912,031,991 seconds is equal to 442 years, 18 weeks, 4 days, 21 hours, 19 minutes, 51 seconds.
• To count from 1 to 13,912,031,991 would take you about eight hundred eighty-four 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 13912031991 cubic inches would be around 200.4 feet tall.

Recreational maths with 13912031991

• 13912031991 backwards is 19913021931
• 13912031991 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 13912031991's digits is 39
• More coming soon!