18218081688408

Names of 18218081688408

• Cardinal: 18218081688408 can be written as Eighteen trillion, two hundred eighteen billion, eighty-one million, six hundred eighty-eight thousand, four hundred eight.

Scientific notation

• Scientific notation: 1.8218081688408 × 10¹³

Factors of 18218081688408

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1990147

Divisors of 18218081688408

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 17 18 21 24 28 34 36 42 51 56 63 68 72 84 102 119 126 136 153 168 204 238 252 306 357 408 476 504 612 714 952 1069 1071 1224 1428 2138 2142 2856 3207 4276 4284 6414 7483 8552 8568 9621 12828 14966 18173 19242 22449 25656 29932 36346 38484 44898 54519 59864 67347 72692 76968 89796 109038 127211 134694 145384 163557 179592 218076 254422 269388 327114 381633 436152 508844 538776 654228 763266 1017688 1144899 1308456 1526532 1989049 2289798 3053064 3978098 4579596 5967147 7956196 9159192 11934294 13923343 15912392 17901441 23868588 27846686 33813833 35802882 41770029 47737176 55693372 67627666 71605764 83540058 101441499 111386744 125310087 135255332 143211528 167080116 202882998 236696831 250620174 270510664 304324497 334160232 405765996 473393662 501240348 608648994 710090493 811531992 946787324 1002480696 1217297988 1420180986 1893574648 2126293381 2130271479 2434595976 2840361972 4252586762 4260542958 5680723944 6378880143 8505173524 8521085916 12757760286 14884053667 17010347048 17042171832 19136640429 25515520572 29768107334 36146987477 38273280858 44652161001 51031041144 59536214668 72293974954 76546561716 89304322002 108440962431 119072429336 133956483003 144587949908 153093123432 178608644004 216881924862 253028912339 267912966006 289175899816 325322887293 357217288008 433763849724 506057824678 535825932012 650645774586 759086737017 867527699448 1012115649356 1071651864024 1301291549172 1518173474034 2024231298712 2277260211051 2602583098344 3036346948068 4554520422102 6072693896136 9109040844204 18218081688408
• Sum of all divisors σ(n): 59762200680000
• Sum of proper divisors (its aliquot sum) s(n): 41544118991592
• 18218081688408 is an abundant number, because the sum of its proper divisors (41544118991592) is greater than itself. Its abundance is 23326037303184

Bases of 18218081688408

• Binary: 100001001000110111010010010011001101101011000₂
• Hexadecimal: 0x1091BA499B58
• Base-36: 6GH9RGKM0

Squares and roots of 18218081688408

• 18218081688408 squared (18218081688408²) is 331898500405506884001574464
• 18218081688408 cubed (18218081688408³) is 6046553992647640125952470714439457613312
• The square root of 18218081688408 is 4268264.4820123319
• The cube root of 18218081688408 is 26312.8293021763

Scales and comparisons

• 18,218,081,688,408 seconds is equal to 579,278 years, 33 weeks, 3 days, 22 hours, 46 minutes, 48 seconds.
• To count from 1 to 18,218,081,688,408 would take you about one million, four hundred forty-eight thousand, one hundred ninety-six 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 18218081688408 cubic inches would be around 2192.7 feet tall.

Recreational maths with 18218081688408

• 18218081688408 backwards is 80488618081281
• 18218081688408 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 18218081688408's digits is 63
• More coming soon!