8138418840

Names of 8138418840

• Cardinal: 8138418840 can be written as Eight billion, one hundred thirty-eight million, four hundred eighteen thousand, eight hundred forty.

Scientific notation

• Scientific notation: 8.13841884 × 10⁹

Factors of 8138418840

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 318

Divisors of 8138418840

• Number of divisors d(n): 512
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 17 18 20 24 27 30 31 34 36 40 45 51 54 60 62 68 72 79 85 90 93 102 108 120 124 135 136 153 155 158 170 180 181 186 204 216 237 248 255 270 279 306 310 316 340 360 362 372 395 408 459 465 474 510 527 540 543 558 612 620 632 680 711 724 744 765 790 837 905 918 930 948 1020 1054 1080 1086 1116 1185 1224 1240 1343 1395 1422 1448 1530 1580 1581 1629 1674 1810 1836 1860 1896 2040 2108 2133 2172 2232 2295 2370 2449 2635 2686 2715 2790 2844 3060 3077 3160 3162 3258 3348 3555 3620 3672 3720 4029 4185 4216 4266 4344 4590 4740 4743 4887 4898 5270 5372 5430 5580 5611 5688 6120 6154 6324 6516 6696 6715 7110 7240 7347 7905 8058 8145 8370 8532 9180 9231 9480 9486 9774 9796 10540 10665 10744 10860 11160 11222 12087 12245 12308 12648 13032 13430 14220 14229 14299 14694 15385 15810 16116 16290 16740 16833 17064 18360 18462 18972 19548 19592 20145 21080 21330 21720 22041 22444 23715 24174 24435 24490 24616 26860 27693 28055 28440 28458 28598 29388 30770 31620 32232 32580 33480 33666 36261 36735 36924 37944 39096 40290 41633 42660 42897 44082 44888 46155 47430 48348 48870 48980 50499 53720 55386 56110 56916 57196 58776 60435 61540 63240 65160 66123 67332 71145 71495 72522 73470 73848 80580 83079 83266 84165 85320 85794 88164 92310 94860 95387 96696 97740 97960 100998 110205 110772 112220 113832 114392 120870 123080 124899 128691 132246 134664 138465 142290 142990 145044 146940 151497 161160 166158 166532 168330 171588 176328 181305 184620 189720 190774 195480 201996 208165 214485 220410 221544 224440 241740 243083 249798 252495 257382 264492 276930 284580 285980 286161 290088 293880 302994 330615 332316 333064 336660 343176 362610 369240 374697 381548 386073 403992 415395 416330 428970 440820 443269 476935 483480 486166 499596 504990 514764 528984 553860 569160 571960 572322 605988 624495 643455 661230 664632 673320 725220 729249 749394 757485 763096 772146 830790 832660 857940 858483 881640 886538 953870 972332 999192 1009980 1029528 1107720 1124091 1144644 1211976 1215415 1248990 1286910 1322460 1329807 1430805 1450440 1458498 1498788 1514970 1544292 1661580 1665320 1715880 1716966 1773076 1873485 1907740 1930365 1944664 2019960 2187747 2216345 2248182 2289288 2430830 2497980 2573820 2575449 2644920 2659614 2861610 2916996 2997576 3029940 3088584 3323160 3433932 3546152 3646245 3746970 3815480 3860730 3989421 4292415 4375494 4432690 4496364 4861660 4995960 5147640 5150898 5319228 5620455 5723220 5833992 6059880 6563241 6649035 6867864 7292490 7493940 7535573 7721460 7978842 8584830 8750988 8865380 8992728 9723320 10301796 10638456 10938735 11240910 11446440 11968263 12877245 13126482 13298070 14584980 14987880 15071146 15442920 15957684 17169660 17501976 17730760 19947105 20603592 21877470 22481820 22606719 23936526 25754490 26252964 26596140 29169960 30142292 31915368 32816205 34339320 37677865 39894210 43754940 44963640 45213438 47873052 51508980 52505928 53192280 59841315 60284584 65632410 67820157 75355730 79788420 87509880 90426876 95746104 103017960 113033595 119682630 131264820 135640314 150711460 159576840 180853752 203460471 226067190 239365260 262529640 271280628 301422920 339100785 406920942 452134380 478730520 542561256 678201570 813841884 904268760 1017302355 1356403140 1627683768 2034604710 2712806280 4069209420 8138418840
• Sum of all divisors σ(n): 30191616000
• Sum of proper divisors (its aliquot sum) s(n): 22053197160
• 8138418840 is an abundant number, because the sum of its proper divisors (22053197160) is greater than itself. Its abundance is 13914778320

Bases of 8138418840

• Binary: 111100101000101100110101010011000₂
• Hexadecimal: 0x1E5166A98
• Base-36: 3QLEK60

Squares and roots of 8138418840

• 8138418840 squared (8138418840²) is 66233861215266945600
• 8138418840 cubed (8138418840³) is 539038903960273805700295104000
• The square root of 8138418840 is 90213.1855107667
• The cube root of 8138418840 is 2011.4690085371

Scales and comparisons

• 8,138,418,840 seconds is equal to 258 years, 40 weeks, 2 days, 15 hours, 54 minutes.
• To count from 1 to 8,138,418,840 would take you about five hundred seventeen 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 8138418840 cubic inches would be around 167.6 feet tall.

Recreational maths with 8138418840

• 8138418840 backwards is 0488148318
• 8138418840 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 8138418840's digits is 45
• More coming soon!