13391487291

Names of 13391487291

• Cardinal: 13391487291 can be written as Thirteen billion, three hundred ninety-one million, four hundred eighty-seven thousand, two hundred ninety-one.

Scientific notation

• Scientific notation: 1.3391487291 × 10¹⁰

Factors of 13391487291

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 848

Divisors of 13391487291

• Number of divisors d(n): 128
• Complete list of divisors:
  1 3 7 13 21 31 39 43 49 91 93 129 147 217 273 301 343 403 559 637 651 751 903 1029 1209 1333 1519 1677 1911 2107 2253 2821 3913 3999 4459 4557 5257 6321 8463 9331 9763 10633 11739 13377 14749 15771 17329 19747 23281 27391 27993 29289 31899 32293 36799 44247 51987 59241 65317 68341 69843 82173 96879 110397 121303 138229 162967 191737 195951 205023 226051 257593 302653 363909 414687 419809 457219 478387 488901 575211 678153 772779 849121 907959 1001083 1140769 1259427 1371657 1435161 1582357 2118571 2547363 2938663 3003249 3348709 3422307 4747071 5943847 6355713 7007581 7985383 8815989 10046127 11076499 13014079 14829997 17831541 20570641 21022743 23956149 33229497 39042237 44489991 49053067 61711923 91098553 103809979 143994487 147159201 273295659 311429937 343371469 431983461 637689871 1030114407 1913069613 4463829097 13391487291
• Sum of all divisors σ(n): 23717478400
• Sum of proper divisors (its aliquot sum) s(n): 10325991109
• 13391487291 is a deficient number, because the sum of its proper divisors (10325991109) is less than itself. Its deficiency is 3065496182

Bases of 13391487291

• Binary: 1100011110001100011110000100111011₂
• Hexadecimal: 0x31E31E13B
• Base-36: 65GY1Q3

Squares and roots of 13391487291

• 13391487291 squared (13391487291²) is 179331931865014518681
• 13391487291 cubed (13391487291³) is 2401521286440819854447093583171
• The square root of 13391487291 is 115721.5938837691
• The cube root of 13391487291 is 2374.7046600653

Scales and comparisons

• 13,391,487,291 seconds is equal to 425 years, 42 weeks, 1 hour, 34 minutes, 51 seconds.
• To count from 1 to 13,391,487,291 would take you about eight hundred fifty-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 13391487291 cubic inches would be around 197.9 feet tall.

Recreational maths with 13391487291

• 13391487291 backwards is 19278419331
• The number of decimal digits it has is: 11
• The sum of 13391487291's digits is 48
• More coming soon!