1991015197432208

Names of 1991015197432208

• Cardinal: 1991015197432208 can be written as One quadrillion, nine hundred ninety-one trillion, fifteen billion, one hundred ninety-seven million, four hundred thirty-two thousand, two hundred eight.

Scientific notation

• Scientific notation: 1.991015197432208 × 10¹⁵

Factors of 1991015197432208

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 2689

Divisors of 1991015197432208

• Number of divisors d(n): 180
• Complete list of divisors:
  1 2 4 8 16 17 34 61 68 122 136 244 272 289 488 578 976 1037 1156 2074 2312 2609 3721 4148 4624 4913 5218 7442 8296 9826 10436 14884 16592 17629 19652 20872 29768 35258 39304 41744 44353 59536 63257 70516 78608 88706 126514 141032 159149 177412 253028 282064 299693 318298 354824 506056 599386 636596 709648 754001 1012112 1075369 1198772 1273192 1508002 2150738 2397544 2546384 2705533 3016004 4301476 4795088 5411066 6032008 6806881 8602952 9708089 10822132 12064016 12818017 13613762 17205904 18281273 19416178 21644264 25636034 27227524 36562546 38832356 43288528 45994061 51272068 54455048 73125092 77664712 91988122 102544136 108910096 115716977 146250184 155329424 165037513 183976244 205088272 231433954 292500368 330075026 367952488 415219741 462867908 660150052 735904976 781899037 830439482 925735816 1320300104 1563798074 1660878964 1851471632 1967188609 2640600208 2805637721 3127596148 3321757928 3934377218 5611275442 6255192296 6643515856 7058735597 7868754436 11222550884 12510384592 14117471194 15737508872 22445101768 25328404201 28234942388 31475017744 33442206353 44890203536 47695841257 50656808402 56469884776 66884412706 95391682514 101313616804 112939769552 119998505149 133768825412 190783365028 202627233608 239997010298 267537650824 381566730056 405254467216 430582871417 479994020596 535075301648 763133460112 861165742834 959988041192 1722331485668 1919976082384 2039974587533 3444662971336 4079949175066 6889325942672 7319908814089 8159898350132 14639817628178 16319796700264 29279635256356 32639593400528 58559270512712 117118541025424 124438449839513 248876899679026 497753799358052 995507598716104 1991015197432208
• Sum of all divisors σ(n): 4168532466584460
• Sum of proper divisors (its aliquot sum) s(n): 2177517269152252
• 1991015197432208 is an abundant number, because the sum of its proper divisors (2177517269152252) is greater than itself. Its abundance is 186502071720044

Bases of 1991015197432208

• Binary: 111000100101101000101011001100101011101100110010000₂
• Hexadecimal: 0x712D15995D990
• Base-36: JLR7R628I8

Squares and roots of 1991015197432208

• 1991015197432208 squared (1991015197432208²) is 3964141516406014201716755755264
• 1991015197432208 cubed (1991015197432208³) is 7892666003936332774338694784363432318479142912
• The square root of 1991015197432208 is 44620793.3303769041
• The cube root of 1991015197432208 is 125803.1527251755

Scales and comparisons

• 1,991,015,197,432,208 seconds is equal to 63,308,124 years, 34 weeks, 3 days, 16 hours, 30 minutes, 8 seconds.
• To count from 1 to 1,991,015,197,432,208 would take you about one hundred eighty-nine million, nine hundred twenty-four thousand, three hundred seventy-three 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 1991015197432208 cubic inches would be around 10483.6 feet tall.

Recreational maths with 1991015197432208

• 1991015197432208 backwards is 8022347915101991
• The number of decimal digits it has is: 16
• The sum of 1991015197432208's digits is 62
• More coming soon!