1991129126798

Names of 1991129126798

• Cardinal: 1991129126798 can be written as One trillion, nine hundred ninety-one billion, one hundred twenty-nine million, one hundred twenty-six thousand, seven hundred ninety-eight.

Scientific notation

• Scientific notation: 1.991129126798 × 10¹²

Factors of 1991129126798

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 117

Divisors of 1991129126798

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 7 14 29 49 58 79 98 158 203 343 406 553 686 841 1106 1421 1682 2291 2401 2842 3871 4582 4802 5887 6241 7742 9947 11774 12482 16037 19894 27097 32074 41209 43687 54194 66439 69629 82418 87374 112259 132878 139258 180989 189679 224518 288463 305809 361978 379358 465073 493039 576926 611618 785813 930146 986078 1266923 1571626 2019241 2140663 2533846 3255511 3451273 4038482 4281326 5248681 5500691 6511022 6902546 8868461 10497362 11001382 14298131 14984641 17736922 22788577 24158911 28596262 29969282 36740767 45577154 48317822 62079227 73481534 100086917 124158454 159520039 169112377 200173834 257185369 319040078 338224754 414645799 434554589 514370738 700608419 829291598 869109178 1183786639 1401216838 1800297583 2367573278 2902520593 3600595166 4904258933 5805041186 9808517866 12602083081 20317644151 25204166162 34329812531 40635288302 68659625062 142223509057 284447018114 995564563399 1991129126798
• Sum of all divisors σ(n): 3654822331680
• Sum of proper divisors (its aliquot sum) s(n): 1663693204882
• 1991129126798 is a deficient number, because the sum of its proper divisors (1663693204882) is less than itself. Its deficiency is 327435921916

Bases of 1991129126798

• Binary: 11100111110011000100010110101011110001110₂
• Hexadecimal: 0x1CF988B578E
• Base-36: PEPMVEZ2

Squares and roots of 1991129126798

• 1991129126798 squared (1991129126798²) is 3964595199583365961732804
• 1991129126798 cubed (1991129126798³) is 7894020977853970000790713511512081592
• The square root of 1991129126798 is 1411073.7495956759
• The cube root of 1991129126798 is 12580.5552238089

Scales and comparisons

• 1,991,129,126,798 seconds is equal to 63,311 years, 38 weeks, 6 days, 6 minutes, 38 seconds.
• To count from 1 to 1,991,129,126,798 would take you about one hundred fifty-eight thousand, two hundred seventy-nine 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 1991129126798 cubic inches would be around 1048.4 feet tall.

Recreational maths with 1991129126798

• 1991129126798 backwards is 8976219211991
• The number of decimal digits it has is: 13
• The sum of 1991129126798's digits is 65
• More coming soon!