18217398549290920

Names of 18217398549290920

• Cardinal: 18217398549290920 can be written as Eighteen quadrillion, two hundred seventeen trillion, three hundred ninety-eight billion, five hundred forty-nine million, two hundred ninety thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 1.821739854929092 × 10¹⁶

Factors of 18217398549290920

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 1541

Divisors of 18217398549290920

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 4 5 7 8 10 14 19 20 28 35 38 40 49 56 70 76 95 98 133 140 152 190 196 245 266 280 380 392 490 532 541 665 760 931 967 980 1064 1082 1330 1862 1934 1960 2164 2660 2705 3724 3787 3868 4328 4655 4835 5320 5410 6769 7448 7574 7736 9310 9670 10279 10820 13538 15148 18373 18620 18935 19340 20558 21640 26509 27076 30296 33845 36746 37240 37870 38680 41116 47383 51395 53018 54152 67690 71953 73492 75740 82232 91865 94766 102790 106036 128611 132545 135380 143906 146984 151480 183730 189532 205580 212072 236915 257222 265090 270760 287812 359765 367460 379064 411160 473830 503671 514444 523147 530180 575624 643055 719530 734920 900277 935089 947660 1007342 1028888 1046294 1060360 1286110 1439060 1800554 1870178 1895320 2014684 2092588 2518355 2572220 2615735 2878120 3601108 3662029 3740356 4029368 4185176 4501385 4675445 5036710 5144440 5231470 6545623 7202216 7324058 7480712 9002770 9350890 9939793 10073420 10462940 13091246 14648116 17766691 18005540 18310145 18701780 19879586 20146840 20925880 25634203 26182492 29296232 32728115 35533382 36011080 36620290 37403560 39759172 45819361 49698965 51268406 52364984 65456230 69578551 71066764 73240580 79518344 88833455 91638722 99397930 102536812 124366837 128171015 130912460 139157102 142133528 146481160 177666910 183277444 198795860 205073624 229096805 248733674 256342030 261824920 278314204 347892755 355333820 366554888 397591720 458193610 487049857 497467348 505883149 512684060 556628408 621834185 695785510 710667640 870567859 904231063 916387220 974099714 994934696 1011766298 1025368120 1243668370 1391571020 1741135718 1808462126 1832774440 1948199428 2023532596 2435249285 2487336740 2529415745 2783142040 3482271436 3541182043 3616924252 3896398856 4047065192 4352839295 4521155315 4870498570 4974673480 5058831490 6329617441 6964542872 7082364086 7233848504 8705678590 9042310630 9611779831 9740997140 10117662980 12659234882 14164728172 17180390197 17411357180 17705910215 18084621260 19223559662 19481994280 20235325960 24788274301 25318469764 28329456344 31648087205 34360780394 34822714360 35411820430 36169242520 38447119324 44307322087 48058899155 49576548602 50636939528 63296174410 67282458817 68721560788 70823640860 76894238648 85901950985 88614644174 96117798310 99153097204 120262731379 123941371505 126592348820 134564917634 137443121576 141647281720 171803901970 177229288348 192235596620 198306194408 221536610435 240525462758 247882743010 253184697640 269129835268 336412294085 343607803940 354458576696 384471193240 443073220870 470977211719 481050925516 489189005083 495765486020 538259670536 601313656895 672824588170 687215607880 841839119653 886146441740 941954423438 962101851032 978378010166 991530972040 1202627313790 1345649176340 1683678239306 1772292883480 1883908846876 1956756020332 2354886058595 2405254627580 2445945025415 2691298352680 3367356478612 3424323035581 3767817693752 3913512040664 4209195598265 4709772117190 4810509255160 4891890050830 6734712957224 6848646071162 8418391196530 9294591096577 9419544234380 9783780101660 13697292142324 16836782393060 17121615177905 18589182193154 18839088468760 19567560203320 23970261249067 27394584284648 33673564786120 34243230355810 37178364386308 46472955482885 47940522498134 65062137676039 68486460711620 74356728772616 92945910965770 95881044996268 119851306245335 130124275352078 136972921423240 185891821931540 191762089992536 239702612490670 260248550704156 325310688380195 371783643863080 455434963732273 479405224981340 520497101408312 650621376760390 910869927464546 958810449962680 1301242753520780 1821739854929092 2277174818661365 2602485507041560 3643479709858184 4554349637322730 9108699274645460 18217398549290920
• Sum of all divisors σ(n): 50335619409504000
• Sum of proper divisors (its aliquot sum) s(n): 32118220860213080
• 18217398549290920 is an abundant number, because the sum of its proper divisors (32118220860213080) is greater than itself. Its abundance is 13900822310922160

Bases of 18217398549290920

• Binary: 1000000101110001010000010100001010000110001111110101000₂
• Hexadecimal: 0x40B8A0A1431FA8
• Base-36: 4ZDJ1CWYEUG

Squares and roots of 18217398549290920

• 18217398549290920 squared (18217398549290920²) is 331873609903706916572834794446400
• 18217398549290920 cubed (18217398549290920³) is 6045873819607731082288411053333929716673946688000
• The square root of 18217398549290920 is 134971843.5426104713
• The cube root of 18217398549290920 is 263125.0040644935

Scales and comparisons

• 18,217,398,549,290,920 seconds is equal to 579,256,923 years, 39 weeks, 1 day, 10 hours, 8 minutes, 40 seconds.
• To count from 1 to 18,217,398,549,290,920 would take you about one billion, seven hundred thirty-seven million, seven hundred seventy thousand, seven hundred seventy-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 18217398549290920 cubic inches would be around 21927.1 feet tall.

Recreational maths with 18217398549290920

• 18217398549290920 backwards is 02909294589371281
• The number of decimal digits it has is: 17
• The sum of 18217398549290920's digits is 79
• More coming soon!