18491387953808

Names of 18491387953808

• Cardinal: 18491387953808 can be written as Eighteen trillion, four hundred ninety-one billion, three hundred eighty-seven million, nine hundred fifty-three thousand, eight hundred eight.

Scientific notation

• Scientific notation: 1.8491387953808 × 10¹³

Factors of 18491387953808

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 1324

Divisors of 18491387953808

• Number of divisors d(n): 720
• Complete list of divisors:
  1 2 4 7 8 11 14 16 22 23 28 41 44 46 53 56 77 82 88 92 106 112 121 154 161 164 176 184 212 242 253 287 308 322 328 368 371 424 451 484 506 529 574 583 616 644 656 742 847 848 902 943 968 1012 1058 1148 1166 1187 1219 1232 1288 1484 1694 1771 1804 1886 1936 2024 2116 2173 2296 2332 2374 2438 2576 2783 2968 3157 3388 3542 3608 3703 3772 4048 4081 4232 4346 4592 4664 4748 4876 4961 5566 5819 5936 6314 6413 6601 6776 7084 7216 7406 7544 8162 8309 8464 8533 8692 9328 9496 9752 9922 10373 11132 11638 12628 12826 13057 13202 13409 13552 14168 14812 15088 15211 16324 16618 17066 17384 18992 19481 19504 19844 20746 21689 22264 23276 23903 25256 25652 26114 26404 26818 27301 28037 28336 29624 30422 32648 33236 34132 34727 34768 38962 39688 40733 41492 43378 44528 44891 46552 47806 48667 49979 50512 51304 52228 52808 53636 54602 56074 59248 60844 62911 64009 65296 66472 68264 69454 72611 77924 79376 81466 82984 86756 89782 91399 93104 93863 95612 97334 99958 102608 104456 105616 107272 109204 112148 114103 121688 125822 128018 132944 136528 138908 143627 145222 147499 151823 155848 162932 165968 167321 173512 179564 182798 187726 191107 191224 194668 196259 199916 208912 214544 218408 224296 228206 238579 243376 251644 256036 262933 277816 287254 290444 294998 300311 303646 308407 311696 325864 334642 340669 347024 349853 359128 365596 375452 382214 382448 389336 392518 399832 436816 440377 448063 448592 456412 477158 503288 512072 525866 535337 549769 555632 574508 580888 589996 600622 607292 616814 627923 651728 669284 681338 692021 699706 718256 731192 750904 764428 778672 785036 798721 799664 880754 896126 912824 954316 1005389 1006576 1024144 1032493 1051732 1070674 1099538 1119341 1149016 1149517 1161776 1179992 1201244 1214584 1233628 1255846 1338568 1362676 1384042 1399412 1446953 1462384 1501808 1528856 1570072 1597442 1670053 1761508 1792252 1825648 1840531 1908632 2010778 2064986 2102177 2103464 2141348 2158849 2199076 2238682 2298032 2299034 2359984 2402488 2429168 2467256 2511692 2579351 2624369 2677136 2725352 2768084 2798824 2893906 3057712 3140144 3194884 3303421 3340106 3392477 3523016 3584504 3681062 3747359 3817264 3848383 4021556 4129972 4204354 4206928 4282696 4317698 4395461 4398152 4477364 4598068 4804976 4844147 4934512 5023384 5158702 5248738 5450704 5536168 5597648 5787812 5888707 6047459 6389768 6606842 6680212 6784954 6907153 7046032 7169008 7362124 7494718 7612231 7696766 7835387 8043112 8046619 8259944 8408708 8565392 8635396 8790922 8796304 8954728 9196136 9688294 10046768 10128671 10317404 10497476 11072336 11575624 11777414 12094918 12312751 12644687 12779536 13213684 13360424 13569908 13814306 14724248 14989436 15224462 15393532 15670774 15916483 16086224 16093238 16519888 16817416 17270792 17581844 17909456 18055457 18370583 18392272 19376588 20257342 20634808 20994952 23123947 23151248 23554828 23747339 24189836 24625502 25289374 25744843 26427368 26720848 27139816 27628612 28372861 29448496 29978872 30448924 30787064 31341548 31832966 32186476 33279919 33634832 34541584 35163688 36110914 36741166 38753176 40514684 41220949 41269616 41989904 42332213 46247894 47109656 47494678 48350071 48379672 49251004 50578748 51489686 52854736 53285617 54279632 55257224 56745722 59325073 59957744 60897848 61574128 62683096 63665932 64372952 66559838 70327376 72221828 73482332 75978683 77506352 81029368 82441898 84664426 86189257 88512809 92495788 94219312 94989356 96700142 96759344 98502008 101157496 102979372 106571234 110514448 111415381 113491444 118650146 121795696 125366192 127331864 128745904 133119676 135440261 139091557 144443656 146964664 151957366 162058736 164883796 169328852 172378514 175081313 177025618 180213901 184991576 189978712 193400284 197004016 198610027 202314992 205958744 213142468 222830762 226982888 232959433 237300292 254663728 266239352 270880522 278183114 283193273 288887312 293929328 303914732 312101471 329767592 338657704 344757028 350162626 354051236 360427802 366079109 369983152 379957424 386800568 397220054 411917488 415275511 426284936 445661524 453965776 465918866 474600584 531850781 532478704 541761044 556366228 566386546 607829464 624202942 652575803 659535184 677315408 689514056 700325252 708102472 720855604 732158218 773601136 794440108 830551022 852569872 891323048 931837732 948081827 949201168 973640899 1063701562 1083522088 1112732456 1132773092 1215658928 1225569191 1248405884 1305151606 1364476679 1379028112 1400650504 1416204944 1441711208 1464316436 1588880216 1661102044 1782646096 1863675464 1896163654 1947281798 1982352911 2127403124 2167044176 2184710297 2225464912 2265546184 2451138382 2496811768 2562553763 2610303212 2728953358 2801301008 2883422416 2928632872 3115126003 3177760432 3322204088 3727350928 3792327308 3894563596 3964705822 4026870199 4254806248 4369420594 4531092368 4568030621 4902276764 4993623536 5125107526 5220606424 5457906716 5857265744 6230252006 6644408176 7178333833 7584654616 7789127192 7929411644 8053740398 8509612496 8738841188 9136061242 9551336753 9804553528 10250215052 10441212848 10915813432 12460504012 14356667666 15009243469 15169309232 15578254384 15858823288 16107480796 17477682376 18272122484 19102673506 19609107056 20500430104 21805882021 21831626864 24921008024 28188091393 28713335332 30018486938 31717646576 32214961592 34955364752 36544244968 38205347012 41000860208 43611764042 49842016048 50248336831 56376182786 57426670664 60036973876 64429923184 73088489936 76410694024 87223528084 100496673662 105064704283 112752365572 114853341328 120073947752 152821388048 165101678159 174447056168 200993347324 210129408566 225504731144 240147895504 330203356318 348894112336 401986694648 420258817132 451009462288 660406712636 803973389296 840517634264 1155711747113 1320813425272 1681035268528 2311423494226 2641626850544 4622846988452 9245693976904 18491387953808
• Sum of all divisors σ(n): 49145973706368
• Sum of proper divisors (its aliquot sum) s(n): 30654585752560
• 18491387953808 is an abundant number, because the sum of its proper divisors (30654585752560) is greater than itself. Its abundance is 12163197798752

Bases of 18491387953808

• Binary: 100001101000101011100100111000100001010010000₂
• Hexadecimal: 0x10D15C9C4290
• Base-36: 6JYTQYCNK

Squares and roots of 18491387953808

• 18491387953808 squared (18491387953808²) is 341931428458235613141700864
• 18491387953808 cubed (18491387953808³) is 6322786697220979974678270213917785690112
• The square root of 18491387953808 is 4300161.3869490991
• The cube root of 18491387953808 is 26443.7577586953

Scales and comparisons

• 18,491,387,953,808 seconds is equal to 587,968 years, 48 weeks, 5 days, 21 hours, 50 minutes, 8 seconds.
• To count from 1 to 18,491,387,953,808 would take you about one million, four hundred sixty-nine thousand, nine hundred twenty-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 18491387953808 cubic inches would be around 2203.6 feet tall.

Recreational maths with 18491387953808

• 18491387953808 backwards is 80835978319481
• The number of decimal digits it has is: 14
• The sum of 18491387953808's digits is 74
• More coming soon!