138261931668

Names of 138261931668

• Cardinal: 138261931668 can be written as One hundred thirty-eight billion, two hundred sixty-one million, nine hundred thirty-one thousand, six hundred sixty-eight.

Scientific notation

• Scientific notation: 1.38261931668 × 10¹¹

Factors of 138261931668

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 5186

Divisors of 138261931668

• Number of divisors d(n): 480
• Complete list of divisors:
  1 2 3 4 6 7 9 12 14 17 18 19 21 27 28 34 36 37 38 42 51 54 57 63 68 74 76 81 84 102 108 111 114 119 126 133 148 153 162 171 189 204 222 228 238 252 259 266 306 323 324 333 342 357 378 399 444 459 476 513 518 532 567 612 629 646 666 684 703 714 756 777 798 918 969 999 1026 1036 1071 1134 1197 1258 1292 1332 1377 1406 1428 1539 1554 1596 1836 1887 1938 1998 2052 2109 2142 2261 2268 2331 2394 2516 2754 2812 2907 2997 3078 3108 3213 3591 3774 3876 3996 4218 4284 4403 4522 4662 4788 4921 5101 5508 5661 5814 5994 6156 6327 6426 6783 6993 7182 7548 8436 8721 8806 9044 9324 9639 9842 10202 10773 11322 11628 11951 11988 12654 12852 13209 13566 13986 14364 14763 15303 16983 17442 17612 18981 19278 19684 20349 20404 20979 21546 22644 23902 25308 26163 26418 27132 27972 29526 30606 33966 34884 35707 35853 37962 38556 39627 40698 41958 43092 44289 45909 47804 50949 52326 52836 56943 59052 61047 61212 67932 71414 71706 75924 79254 81396 83657 83916 86717 88578 91818 96919 101898 104652 107121 107559 113886 118881 122094 132867 137727 142828 143412 158508 167314 173434 177156 183141 183636 188737 193838 203796 214242 215118 227772 237762 244188 250971 260151 265734 275454 290757 321363 322677 334628 346868 356643 366282 377474 387676 398601 413181 428484 430236 475524 501942 520302 531468 550908 566211 581514 607019 642726 645354 678433 713286 732564 752913 754948 780453 797202 826362 872271 964089 968031 1003884 1040604 1132422 1163028 1214038 1285452 1290708 1321159 1356866 1426572 1505826 1560906 1594404 1647623 1652724 1698633 1744542 1821057 1928178 1936062 2035299 2258739 2264844 2341359 2428076 2616813 2642318 2713732 2892267 3011652 3121812 3208529 3295246 3397266 3489084 3586003 3642114 3856356 3872124 3963477 4070598 4517478 4682718 4942869 5095899 5233626 5284636 5463171 5784534 6105897 6417058 6590492 6776217 6794532 7024077 7172006 7284228 7850439 7926954 8141196 9034956 9365436 9625587 9885738 10191798 10467252 10758009 10926342 11533361 11569068 11890431 12211794 12834116 13552434 14048154 14344012 14828607 15287697 15700878 15853908 16389513 18317691 19251174 19771476 20383596 21516018 21852684 22459703 23066722 23780862 24423588 25102021 27104868 28096308 28876761 29657214 30575394 31401756 32274027 32779026 34600083 35671293 36635382 38502348 43032036 44485821 44919406 46133444 47561724 49168539 50204042 54953073 57753522 59314428 60962051 61150788 64548054 65558052 67379109 69200166 71342586 73270764 75306063 86630283 88971642 89838812 96822081 98337078 100408084 103800249 107013879 109906146 115507044 121924102 129096108 133457463 134758218 138400332 142685172 150612126 173260566 177943284 182886153 193644162 196674156 202137327 207600498 214027758 219812292 225918189 243848204 259890849 266914926 269516436 290466243 301224252 311400747 346521132 365772306 387288324 404274654 415200996 426734357 428055516 451836378 519781698 533829852 548658459 580932486 606411981 622801494 677754567 731544612 808549308 853468714 903672756 934202241 1039563396 1097316918 1161864972 1212823962 1245602988 1280203071 1355509134 1645975377 1706937428 1819235943 1868404482 2033263701 2194633836 2425647924 2560406142 2711018268 3291950754 3638471886 3736808964 3840609213 4066527402 4937926131 5120812284 6583901508 7276943772 7681218426 8133054804 9875852262 11521827639 15362436852 19751704524 23043655278 34565482917 46087310556 69130965834 138261931668
• Sum of all divisors σ(n): 472933359360
• Sum of proper divisors (its aliquot sum) s(n): 334671427692
• 138261931668 is an abundant number, because the sum of its proper divisors (334671427692) is greater than itself. Its abundance is 196409496024

Bases of 138261931668

• Binary: 10000000110001000011011010011010010100₂
• Hexadecimal: 0x20310DA694
• Base-36: 1RILL190

Squares and roots of 138261931668

• 138261931668 squared (138261931668²) is 19116361748566701262224
• 138261931668 cubed (138261931668³) is 2643065101821098246857784037709632
• The square root of 138261931668 is 371835.8934637699
• The cube root of 138261931668 is 5170.9166811217

Scales and comparisons

• 138,261,931,668 seconds is equal to 4,396 years, 15 weeks, 4 days, 20 hours, 7 minutes, 48 seconds.
• To count from 1 to 138,261,931,668 would take you about eight thousand, seven hundred ninety-two 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 138261931668 cubic inches would be around 430.9 feet tall.

Recreational maths with 138261931668

• 138261931668 backwards is 866139162831
• 138261931668 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 138261931668's digits is 54
• More coming soon!