18918955620864

Names of 18918955620864

• Cardinal: 18918955620864 can be written as Eighteen trillion, nine hundred eighteen billion, nine hundred fifty-five million, six hundred twenty thousand, eight hundred sixty-four.

Scientific notation

• Scientific notation: 1.8918955620864 × 10¹³

Factors of 18918955620864

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 18
• Sum of prime factors: 245

Divisors of 18918955620864

• Number of divisors d(n): 480
• Complete list of divisors:
  1 2 3 4 6 8 9 12 13 16 18 24 26 27 32 36 39 48 52 54 64 72 78 81 96 104 108 117 128 144 156 162 192 208 216 227 234 243 256 288 312 324 351 384 416 432 454 468 486 512 576 624 648 681 702 768 832 864 908 936 972 1053 1152 1248 1296 1362 1404 1536 1664 1728 1816 1872 1944 2043 2106 2304 2496 2592 2724 2808 2951 3159 3328 3456 3632 3744 3888 4086 4212 4608 4992 5184 5448 5616 5902 6129 6318 6656 6912 7264 7488 7776 8172 8424 8853 9984 10368 10896 11232 11804 12258 12636 13824 14528 14976 15552 16344 16848 17706 18387 19968 20736 21792 22464 23608 24516 25272 26559 29056 29952 31104 32688 33696 35412 36774 41472 43584 44928 47216 49032 50544 51529 53118 55161 58112 59904 62208 65376 67392 70824 73548 79677 87168 89856 94432 98064 101088 103058 106236 110322 116224 124416 130752 134784 141648 147096 154587 159354 174336 179712 188864 196128 202176 206116 212472 220644 239031 261504 269568 283296 294192 309174 318708 348672 377728 392256 404352 412232 424944 441288 463761 478062 523008 539136 566592 588384 618348 637416 669877 717093 755456 784512 808704 824464 849888 882576 927522 956124 1046016 1133184 1176768 1236696 1274832 1339754 1391283 1434186 1510912 1569024 1617408 1648928 1699776 1765152 1855044 1912248 2009631 2266368 2353536 2473392 2549664 2679508 2782566 2868372 3138048 3297856 3399552 3530304 3710088 3824496 4019262 4173849 4532736 4707072 4946784 5099328 5359016 5565132 5736744 6028893 6595712 6799104 7060608 7420176 7648992 8038524 8347698 9414144 9893568 10198656 10718032 11130264 11473488 11697083 12057786 12521547 13191424 13598208 14121216 14840352 15297984 16077048 16695396 18086679 19787136 20397312 21436064 22260528 22946976 23394166 24115572 25043094 26382848 28242432 29680704 30595968 32154096 33390792 35091249 36173358 39574272 40794624 42872128 44521056 45893952 46788332 48231144 50086188 54260037 59361408 61191936 64308192 66781584 70182498 72346716 79148544 85744256 89042112 91787904 93576664 96462288 100172376 105273747 108520074 118722816 122383872 128616384 133563168 140364996 144693432 152062079 162780111 171488512 178084224 183575808 187153328 192924576 200344752 210547494 217040148 237445632 257232768 267126336 280729992 289386864 304124158 315821241 325560222 342977024 356168448 367151616 374306656 385849152 400689504 421094988 434080296 456186237 514465536 534252672 561459984 578773728 608248316 631642482 651120444 712336896 748613312 771698304 801379008 842189976 868160592 912372474 947463723 1028931072 1068505344 1122919968 1157547456 1216496632 1263284964 1302240888 1368558711 1497226624 1543396608 1602758016 1684379952 1736321184 1824744948 1894927446 2137010688 2245839936 2315094912 2432993264 2526569928 2604481776 2737117422 2842391169 2994453248 3086793216 3205516032 3368759904 3472642368 3649489896 3789854892 4105676133 4491679872 4630189824 4865986528 5053139856 5208963552 5474234844 5684782338 5988906496 6411032064 6737519808 6945284736 7298979792 7579709784 8211352266 8983359744 9260379648 9731973056 10106279712 10417927104 10948469688 11369564676 12317028399 13475039616 13890569472 14597959584 15159419568 16422704532 17966719488 19463946112 20212559424 20835854208 21896939376 22739129352 24634056798 26950079232 27781138944 29195919168 30318839136 32845409064 36951085197 38927892224 40425118848 41671708416 43793878752 45478258704 49268113596 53900158464 58391838336 60637678272 65690818128 73902170394 77855784448 80850237696 83343416832 87587757504 90956517408 98536227192 116783676672 121275356544 131381636256 147804340788 161700475392 175175515008 181913034816 197072454384 233567353344 242550713088 262763272512 295608681576 350351030016 363826069632 394144908768 485101426176 525526545024 591217363152 700702060032 727652139264 788289817536 1051053090048 1182434726304 1455304278528 1576579635072 2102106180096 2364869452608 3153159270144 4729738905216 6306318540288 9459477810432 18918955620864
• Sum of all divisors σ(n): 61249146678720
• Sum of proper divisors (its aliquot sum) s(n): 42330191057856
• 18918955620864 is an abundant number, because the sum of its proper divisors (42330191057856) is greater than itself. Its abundance is 23411235436992

Bases of 18918955620864

• Binary: 100010011010011101001101000010001101000000000₂
• Hexadecimal: 0x1134E9A11A00
• Base-36: 6PF8XPC00

Squares and roots of 18918955620864

• 18918955620864 squared (18918955620864²) is 357926881784221539712106496
• 18918955620864 cubed (18918955620864³) is 6771602791989922551922977784848967532544
• The square root of 18918955620864 is 4349592.5810199741
• The cube root of 18918955620864 is 26646.0222469797

Scales and comparisons

• 18,918,955,620,864 seconds is equal to 601,564 years, 13 weeks, 6 days, 18 hours, 14 minutes, 24 seconds.
• To count from 1 to 18,918,955,620,864 would take you about one million, five hundred three thousand, nine hundred ten 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 18918955620864 cubic inches would be around 2220.5 feet tall.

Recreational maths with 18918955620864

• 18918955620864 backwards is 46802655981981
• 18918955620864 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 18918955620864's digits is 72
• More coming soon!