18105991440

Names of 18105991440

• Cardinal: 18105991440 can be written as Eighteen billion, one hundred five million, nine hundred ninety-one thousand, four hundred forty.

Scientific notation

• Scientific notation: 1.810599144 × 10¹⁰

Factors of 18105991440

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 221

Divisors of 18105991440

• Number of divisors d(n): 640
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 17 20 24 30 31 34 37 40 48 51 53 60 62 68 73 74 80 85 93 102 106 111 120 124 136 146 148 155 159 170 185 186 204 212 219 222 240 248 255 265 272 292 296 310 318 340 365 370 372 408 424 438 444 465 496 510 527 530 555 584 592 620 629 636 680 730 740 744 795 816 848 876 888 901 930 1020 1054 1060 1095 1110 1147 1168 1240 1241 1258 1272 1360 1460 1480 1488 1581 1590 1643 1752 1776 1802 1860 1887 1961 2040 2108 2120 2190 2220 2263 2294 2480 2482 2516 2544 2635 2701 2703 2920 2960 3145 3162 3180 3286 3441 3504 3604 3720 3723 3774 3869 3922 4080 4216 4240 4380 4440 4505 4526 4588 4929 4964 5032 5270 5402 5406 5735 5840 5883 6205 6290 6324 6360 6572 6789 6882 7208 7440 7446 7548 7738 7844 7905 8103 8215 8432 8760 8880 9010 9052 9176 9435 9805 9858 9928 10064 10540 10804 10812 11315 11470 11607 11766 12410 12580 12648 12720 13144 13505 13515 13578 13764 14416 14892 15096 15476 15688 15810 16206 16430 17205 17520 18020 18104 18352 18615 18870 19345 19499 19610 19716 19856 21080 21608 21624 22630 22940 23214 23532 24645 24820 25160 25296 26288 27010 27030 27156 27528 27931 29415 29784 30192 30952 31376 31620 32412 32860 33337 33945 34410 36040 36208 37230 37740 38471 38690 38998 39220 39432 40515 42160 43216 43248 45260 45880 45917 46428 47064 49290 49640 50320 54020 54060 54312 55056 55862 58035 58497 58830 59568 60791 61904 63240 64824 65720 65773 66674 67890 68820 72080 74460 75480 76942 77380 77996 78440 78864 81030 83731 83793 90520 91760 91834 92856 94128 97495 98580 99280 100011 108040 108120 108624 111724 115413 116070 116994 117660 119939 121582 126480 129648 131440 131546 133348 135780 137640 137751 139655 143153 148920 150960 153884 154760 155992 156880 162060 166685 167462 167586 181040 182373 183668 185712 192355 194990 197160 197319 200022 216080 216240 223448 229585 230826 232140 233988 235320 239878 243164 251193 263092 266696 271560 275280 275502 279310 286306 292485 297840 303955 307768 309520 311984 324120 328865 333370 334924 335172 359817 364746 367336 384710 389980 394320 394638 400044 418655 418965 429459 446896 459170 461652 464280 467976 470640 479756 486328 500055 502386 526184 533392 543120 551004 558620 572612 577065 584970 599695 607910 615536 648240 657730 666740 669848 670344 688755 715765 719634 729492 734672 769420 779960 789276 800088 837310 837930 858918 911865 918340 923304 928560 935952 959512 972656 986595 1000110 1004772 1033447 1052368 1102008 1117240 1145224 1154130 1169940 1199390 1215820 1255965 1315460 1333480 1339696 1340688 1377510 1423427 1431530 1439268 1458984 1538840 1559920 1578552 1600176 1674620 1675860 1717836 1799085 1823730 1836680 1846608 1919024 1973190 2000220 2009544 2038963 2066894 2147295 2204016 2234480 2290448 2308260 2339880 2398780 2431640 2433601 2511930 2630920 2666960 2755020 2846854 2863060 2878536 2917968 3077680 3100341 3157104 3349240 3351720 3435672 3598170 3647460 3673360 3946380 4000440 4019088 4077926 4133788 4270281 4294590 4437743 4616520 4679760 4797560 4863280 4867202 5023860 5167235 5261840 5510040 5693708 5726120 5757072 6116889 6200682 6698480 6703440 6871344 7117135 7196340 7294920 7300803 7892760 8000880 8155852 8267576 8540562 8589180 8875486 9233040 9595120 9734404 10047720 10194815 10334470 11020080 11387416 11452240 12168005 12233778 12401364 13313229 14234270 14392680 14589840 14601606 15501705 15785520 16311704 16535152 17081124 17178360 17750972 19468808 20095440 20389630 20668940 21351405 22188715 22774832 24336010 24467556 24802728 26626458 28468540 28785360 29203212 30584445 31003410 32623408 34162248 34356720 35501944 36504015 38937616 40779260 41337880 42702810 44377430 48672020 48935112 49605456 53252916 56937080 58406424 61168890 62006820 66566145 68324496 71003888 73008030 75441631 81558520 82675760 85405620 88754860 97344040 97870224 106505832 113874160 116812848 122337780 124013640 133132290 146016060 150883262 163117040 170811240 177509720 194688080 213011664 226324893 244675560 248027280 266264580 292032120 301766524 341622480 355019440 377208155 452649786 489351120 532529160 584064240 603533048 754416310 905299572 1065058320 1131624465 1207066096 1508832620 1810599144 2263248930 3017665240 3621198288 4526497860 6035330480 9052995720 18105991440
• Sum of all divisors σ(n): 65073549312
• Sum of proper divisors (its aliquot sum) s(n): 46967557872
• 18105991440 is an abundant number, because the sum of its proper divisors (46967557872) is greater than itself. Its abundance is 28861566432

Bases of 18105991440

• Binary: 10000110111001100111000000100010000₂
• Hexadecimal: 0x437338110
• Base-36: 8BFU8EO

Squares and roots of 18105991440

• 18105991440 squared (18105991440²) is 327826926025353273600
• 18105991440 cubed (18105991440³) is 5935631516416559594777577984000
• The square root of 18105991440 is 134558.5056397403
• The cube root of 18105991440 is 2625.8753332939

Scales and comparisons

• 18,105,991,440 seconds is equal to 575 years, 37 weeks, 1 day, 2 hours, 4 minutes.
• To count from 1 to 18,105,991,440 would take you about one thousand, one hundred fifty-one 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 18105991440 cubic inches would be around 218.8 feet tall.

Recreational maths with 18105991440

• 18105991440 backwards is 04419950181
• The number of decimal digits it has is: 11
• The sum of 18105991440's digits is 42
• More coming soon!