18188728988157

Names of 18188728988157

• Cardinal: 18188728988157 can be written as Eighteen trillion, one hundred eighty-eight billion, seven hundred twenty-eight million, nine hundred eighty-eight thousand, one hundred fifty-seven.

Scientific notation

• Scientific notation: 1.8188728988157 × 10¹³

Factors of 18188728988157

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 2931

Divisors of 18188728988157

• Number of divisors d(n): 256
• Complete list of divisors:
  1 3 7 9 13 21 27 39 43 63 91 97 117 129 189 273 291 301 351 387 559 679 819 873 903 1009 1161 1261 1677 1759 2037 2457 2619 2709 3027 3783 3913 4171 5031 5277 6111 7063 8127 8827 9081 11349 11739 12313 12513 13117 15093 15831 18333 21189 22867 26481 27243 29197 34047 35217 36939 37539 39351 43387 47493 54223 63567 68601 75637 79443 87591 91819 97873 105651 110817 112617 118053 130161 160069 162669 170623 190701 205803 226911 238329 262773 275457 293619 303709 332451 354159 379561 390483 480207 488007 511869 529459 564031 617409 680733 685111 788319 826371 880857 911127 983281 1138683 1171449 1194361 1272349 1440621 1464021 1535607 1588377 1692093 1774831 2042199 2055333 2218099 2479113 2642571 2733381 2949843 3416049 3583083 3817047 3948217 4208539 4321863 4606821 4765131 5076279 5324493 6165999 6654297 6882967 7336789 8200143 8849529 8906443 10248147 10749249 11451141 11844651 12423817 12625617 14295393 15228837 15526693 15973479 18497997 19962891 20648901 22010367 23072803 26548587 26719329 29459773 32247747 34353423 35533953 37271451 37876851 46580079 47920437 51357523 54711007 59888673 61946703 66031101 69218409 76317733 80157987 88379319 95378257 106601859 111814353 113630553 139740237 154072569 161509621 164133021 172158607 185840109 198093303 207655227 228953199 240473961 265137957 286134771 335443059 382977049 419220711 462217707 484528863 492399063 516475821 534224131 622965681 667647799 686859597 795413871 858404313 992130529 1148931147 1205110249 1386653121 1453586589 1477197189 1549427463 1602672393 2002943397 2060578791 2238061891 2575212939 2976391587 3446793441 3615330747 4360759767 4648282389 4808017179 6008830191 6714185673 6944913703 7402820101 8929174761 10340380323 10845992241 14424051537 15666433237 18026490573 20142557019 20834741109 22208460303 26787524283 32537976723 46999299711 51819740707 60427671057 62504223327 66625380909 96236661313 140997899133 155459222121 187512669981 199876142727 288709983939 422993697399 466377666363 673656629191 866129951817 1399132999089 2020969887573 2598389855451 6062909662719 18188728988157
• Sum of all divisors σ(n): 34339250176000
• Sum of proper divisors (its aliquot sum) s(n): 16150521187843
• 18188728988157 is a deficient number, because the sum of its proper divisors (16150521187843) is less than itself. Its deficiency is 2038207800314

Bases of 18188728988157

• Binary: 100001000101011100100101110101111000111111101₂
• Hexadecimal: 0x108AE4BAF1FD
• Base-36: 6G3SBMC59

Squares and roots of 18188728988157

• 18188728988157 squared (18188728988157²) is 330829862204622765046256649
• 18188728988157 cubed (18188728988157³) is 6017374704829207962567687246666303505893
• The square root of 18188728988157 is 4264824.6139972743
• The cube root of 18188728988157 is 26298.6900937213

Scales and comparisons

• 18,188,728,988,157 seconds is equal to 578,345 years, 16 weeks, 4 days, 14 hours, 55 minutes, 57 seconds.
• To count from 1 to 18,188,728,988,157 would take you about one million, four hundred forty-five thousand, eight hundred sixty-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 18188728988157 cubic inches would be around 2191.6 feet tall.

Recreational maths with 18188728988157

• 18188728988157 backwards is 75188982788181
• The number of decimal digits it has is: 14
• The sum of 18188728988157's digits is 81
• More coming soon!