18997338147840

Names of 18997338147840

• Cardinal: 18997338147840 can be written as Eighteen trillion, nine hundred ninety-seven billion, three hundred thirty-eight million, one hundred forty-seven thousand, eight hundred forty.

Scientific notation

• Scientific notation: 1.899733814784 × 10¹³

Factors of 18997338147840

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 31712994

Divisors of 18997338147840

• Number of divisors d(n): 264
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 13 15 16 18 20 24 26 30 32 36 39 40 45 48 52 60 64 65 72 78 80 90 96 104 117 120 128 130 144 156 160 180 192 195 208 234 240 256 260 288 312 320 360 384 390 416 468 480 512 520 576 585 624 640 720 768 780 832 936 960 1024 1040 1152 1170 1248 1280 1440 1536 1560 1664 1872 1920 2080 2304 2340 2496 2560 2880 3072 3120 3328 3744 3840 4160 4608 4680 4992 5120 5760 6240 6656 7488 7680 8320 9216 9360 9984 11520 12480 13312 14976 15360 16640 18720 19968 23040 24960 29952 33280 37440 39936 46080 49920 59904 66560 74880 99840 119808 149760 199680 299520 599040 31712971 63425942 95138913 126851884 158564855 190277826 253703768 285416739 317129710 380555652 412268623 475694565 507407536 570833478 634259420 761111304 824537246 951389130 1014815072 1141666956 1236805869 1268518840 1427083695 1522222608 1649074492 1902778260 2029630144 2061343115 2283333912 2473611738 2537037680 2854167390 3044445216 3298148984 3710417607 3805556520 4059260288 4122686230 4566667824 4947223476 5074075360 5708334780 6088890432 6184029345 6596297968 7420835214 7611113040 8118520576 8245372460 9133335648 9894446952 10148150720 11416669560 12177780864 12368058690 13192595936 14841670428 15222226080 16237041152 16490744920 18266671296 18552088035 19788893904 20296301440 22833339120 24355561728 24736117380 26385191872 29683340856 30444452160 32474082304 32981489840 36533342592 37104176070 39577787808 40592602880 45666678240 48711123456 49472234760 52770383744 59366681712 60888904320 65962979680 73066685184 74208352140 79155575616 81185205760 91333356480 97422246912 98944469520 105540767488 118733363424 121777808640 131925959360 146133370368 148416704280 158311151232 162370411520 182666712960 197888939040 211081534976 237466726848 243555617280 263851918720 292266740736 296833408560 316622302464 365333425920 395777878080 422163069952 474933453696 487111234560 527703837440 593666817120 633244604928 730666851840 791555756160 949866907392 1055407674880 1187333634240 1266489209856 1461333703680 1583111512320 1899733814784 2110815349760 2374667268480 3166223024640 3799467629568 4749334536960 6332446049280 9498669073920 18997338147840
• Sum of all divisors σ(n): 70888767422928
• Sum of proper divisors (its aliquot sum) s(n): 51891429275088
• 18997338147840 is an abundant number, because the sum of its proper divisors (51891429275088) is greater than itself. Its abundance is 32894091127248

Bases of 18997338147840

• Binary: 100010100011100101001100101111000110000000000₂
• Hexadecimal: 0x114729978C00
• Base-36: 6QF98MWW0

Squares and roots of 18997338147840

• 18997338147840 squared (18997338147840²) is 360898856703376921696665600
• 18997338147840 cubed (18997338147840³) is 6856117617962904097898333979807842304000
• The square root of 18997338147840 is 4358593.5974623741
• The cube root of 18997338147840 is 26682.7703078481

Scales and comparisons

• 18,997,338,147,840 seconds is equal to 604,056 years, 30 weeks, 4 days, 22 hours, 24 minutes.
• To count from 1 to 18,997,338,147,840 would take you about one million, five hundred ten thousand, one hundred forty-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 18997338147840 cubic inches would be around 2223.6 feet tall.

Recreational maths with 18997338147840

• 18997338147840 backwards is 04874183379981
• 18997338147840 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 18997338147840's digits is 72
• More coming soon!