18681490080

Names of 18681490080

• Cardinal: 18681490080 can be written as Eighteen billion, six hundred eighty-one million, four hundred ninety thousand and eighty.

Scientific notation

• Scientific notation: 1.868149008 × 10¹⁰

Factors of 18681490080

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 40

Divisors of 18681490080

• Number of divisors d(n): 864
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 11 12 15 16 18 19 20 22 24 27 30 32 33 36 38 40 44 45 48 54 55 57 60 66 72 76 80 81 88 90 95 96 99 108 110 114 120 121 132 135 144 152 160 162 165 171 176 180 190 198 209 216 220 228 240 242 243 264 270 285 288 297 304 324 330 342 352 360 361 363 380 396 405 418 432 440 456 480 484 486 495 513 528 540 570 594 605 608 627 648 660 684 720 722 726 760 792 810 836 855 864 880 891 912 968 972 990 1026 1045 1056 1080 1083 1089 1140 1188 1210 1215 1254 1296 1320 1331 1368 1440 1444 1452 1485 1520 1539 1584 1620 1672 1710 1760 1782 1805 1815 1824 1881 1936 1944 1980 2052 2090 2160 2166 2178 2280 2299 2376 2420 2430 2508 2565 2592 2640 2662 2673 2736 2888 2904 2970 3040 3078 3135 3168 3240 3249 3267 3344 3420 3564 3610 3630 3762 3872 3888 3960 3971 3993 4104 4180 4320 4332 4356 4455 4560 4598 4617 4752 4840 4860 5016 5130 5280 5324 5346 5415 5445 5472 5643 5776 5808 5940 6156 6270 6480 6498 6534 6655 6688 6840 6897 7128 7220 7260 7524 7695 7776 7920 7942 7986 8208 8360 8664 8712 8910 9120 9196 9234 9405 9504 9680 9720 9747 9801 10032 10260 10648 10692 10830 10890 11286 11495 11552 11616 11880 11913 11979 12312 12540 12960 12996 13068 13310 13365 13680 13794 14256 14440 14520 15048 15390 15840 15884 15972 16245 16335 16416 16720 16929 17328 17424 17820 18392 18468 18810 19360 19440 19494 19602 19855 19965 20064 20520 20691 21296 21384 21660 21780 22572 22990 23085 23760 23826 23958 24624 25080 25289 25992 26136 26620 26730 27360 27588 28215 28512 28880 29040 29241 29403 30096 30780 31768 31944 32490 32670 33440 33858 34485 34656 34848 35640 35739 35937 36784 36936 37620 38880 38988 39204 39710 39930 41040 41382 42592 42768 43320 43560 43681 45144 45980 46170 47520 47652 47916 48735 49005 49248 50160 50578 50787 51984 52272 53240 53460 55176 56430 57760 58080 58482 58806 59565 59895 60192 61560 62073 63536 63888 64980 65340 67716 68970 71280 71478 71874 73568 73872 75240 75867 77976 78408 79420 79860 82080 82764 84645 85536 86640 87120 87362 87723 90288 91960 92340 95304 95832 97470 98010 100320 101156 101574 103455 103968 104544 106480 106920 107217 107811 110352 112860 116964 117612 119130 119790 123120 124146 126445 127072 127776 129960 130680 131043 135432 137940 142560 142956 143748 146205 147015 147744 150480 151734 155952 156816 158840 159720 165528 169290 173280 174240 174724 175446 178695 179685 180576 183920 184680 186219 190608 191664 194940 196020 202312 203148 206910 212960 213840 214434 215622 218405 220704 225720 227601 233928 235224 238260 239580 246240 248292 252890 253935 259920 261360 262086 270864 275880 285912 287496 292410 294030 300960 303468 310365 311904 313632 317680 319440 321651 323433 331056 338580 349448 350892 357390 359370 367840 369360 372438 379335 381216 383328 389880 392040 393129 404624 406296 413820 427680 428868 431244 436810 438615 451440 455202 467856 470448 476520 479160 480491 496584 505780 507870 519840 522720 524172 536085 539055 541728 551760 558657 571824 574992 584820 588060 606936 620730 635360 638880 643302 646866 655215 662112 677160 682803 698896 701784 714780 718740 738720 744876 758670 779760 784080 786258 809248 812592 827640 857736 862488 873620 877230 902880 910404 931095 935712 940896 953040 958320 960982 964953 993168 1011560 1015740 1048344 1072170 1078110 1103520 1117314 1138005 1143648 1149984 1169640 1176120 1179387 1213872 1241460 1286604 1293732 1310430 1354320 1365606 1397792 1403568 1429560 1437480 1441473 1489752 1517340 1559520 1568160 1572516 1608255 1617165 1625184 1655280 1715472 1724976 1747240 1754460 1820808 1862190 1906080 1916640 1921964 1929906 1965645 1986336 2023120 2031480 2048409 2096688 2144340 2156220 2234628 2276010 2339280 2352240 2358774 2402455 2427744 2482920 2573208 2587464 2620860 2708640 2731212 2793285 2807136 2859120 2874960 2882946 2979504 3034680 3145032 3216510 3234330 3310560 3414015 3430944 3449952 3494480 3508920 3538161 3641616 3724380 3843928 3859812 3931290 4046240 4062960 4096818 4193376 4288680 4312440 4324419 4469256 4552020 4678560 4704480 4717548 4804910 4824765 4965840 5146416 5174928 5241720 5462424 5586570 5718240 5749920 5765892 5896935 5959008 6069360 6145227 6290064 6433020 6468660 6828030 6988960 7017840 7076322 7207365 7283232 7448760 7687856 7719624 7862580 8125920 8193636 8577360 8624880 8648838 8938512 9104040 9435096 9609820 9649530 9931680 10242045 10292832 10349856 10483440 10614483 10924848 11173140 11531784 11793870 12138720 12290454 12580128 12866040 12937320 12973257 13656060 14035680 14152644 14414730 14897520 15375712 15439248 15725160 16387272 17154720 17249760 17297676 17690805 17877024 18208080 18870192 19219640 19299060 20484090 20966880 21228966 21622095 21849696 22346280 23063568 23587740 24580908 25732080 25874640 25946514 27312120 28305288 28829460 29795040 30726135 30878496 31450320 32774544 34595352 35381610 36416160 37740384 38439280 38598120 38919771 40968180 42457932 43244190 44692560 46127136 47175480 49161816 51464160 51749280 51893028 53072415 54624240 56610576 57658920 61452270 62900640 64866285 65549088 69190704 70763220 76878560 77196240 77839542 81936360 84915864 86488380 89385120 94350960 98323632 103786056 106144830 109248480 113221152 115317840 116759313 122904540 129732570 138381408 141526440 154392480 155679084 163872720 169831728 172976760 188701920 194598855 196647264 207572112 212289660 230635680 233518626 245809080 259465140 283052880 311358168 327745440 339663456 345953520 389197710 415144224 424579320 467037252 491618160 518930280 566105760 583796565 622716336 691907040 778395420 849158640 934074504 983236320 1037860560 1167593130 1245432672 1556790840 1698317280 1868149008 2075721120 2335186260 3113581680 3736298016 4670372520 6227163360 9340745040 18681490080
• Sum of all divisors σ(n): 76746616128
• Sum of proper divisors (its aliquot sum) s(n): 58065126048
• 18681490080 is an abundant number, because the sum of its proper divisors (58065126048) is greater than itself. Its abundance is 39383635968

Bases of 18681490080

• Binary: 10001011001100000001110101010100000₂
• Hexadecimal: 0x45980EAA0
• Base-36: 8KYH600

Squares and roots of 18681490080

• 18681490080 squared (18681490080²) is 348998071609138406400
• 18681490080 cubed (18681490080³) is 6519804012705248776508608512000
• The square root of 18681490080 is 136680.2475853771
• The cube root of 18681490080 is 2653.4068005437

Scales and comparisons

• 18,681,490,080 seconds is equal to 594 years, 4 days, 22 hours, 48 minutes.
• To count from 1 to 18,681,490,080 would take you about one thousand, one hundred eighty-eight 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 18681490080 cubic inches would be around 221.1 feet tall.

Recreational maths with 18681490080

• 18681490080 backwards is 08009418681
• 18681490080 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18681490080's digits is 45
• More coming soon!