18009040868

Names of 18009040868

• Cardinal: 18009040868 can be written as Eighteen billion, nine million, forty thousand, eight hundred sixty-eight.

Scientific notation

• Scientific notation: 1.8009040868 × 10¹⁰

Factors of 18009040868

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 45958

Divisors of 18009040868

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 4 7 13 14 26 28 52 83 91 166 169 182 332 338 364 581 676 1079 1162 1183 2158 2324 2366 4316 4732 7553 14027 15106 28054 30212 45853 56108 91706 98189 183412 196378 320971 392756 596089 641942 1192178 1283884 2384356 3805799 4172623 7611598 7749157 8345246 15223196 15498314 16690492 26640593 30996628 49475387 53281186 54244099 98950774 106562372 108488198 197901548 216976396 346327709 643180031 692655418 1286360062 1385310836 2572720124 4502260217 9004520434 18009040868
• Sum of all divisors σ(n): 39472590528
• Sum of proper divisors (its aliquot sum) s(n): 21463549660
• 18009040868 is an abundant number, because the sum of its proper divisors (21463549660) is greater than itself. Its abundance is 3454508792

Bases of 18009040868

• Binary: 10000110001011011000010011111100100₂
• Hexadecimal: 0x4316C27E4
• Base-36: 89U48V8

Squares and roots of 18009040868

• 18009040868 squared (18009040868²) is 324325552985294193424
• 18009040868 cubed (18009040868³) is 5840792138248862532375912852032
• The square root of 18009040868 is 134197.7677459651
• The cube root of 18009040868 is 2621.1800944167

Scales and comparisons

• 18,009,040,868 seconds is equal to 572 years, 32 weeks, 5 days, 23 hours, 21 minutes, 8 seconds.
• To count from 1 to 18,009,040,868 would take you about one thousand, one hundred forty-five 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 18009040868 cubic inches would be around 218.4 feet tall.

Recreational maths with 18009040868

• 18009040868 backwards is 86804090081
• The number of decimal digits it has is: 11
• The sum of 18009040868's digits is 44
• More coming soon!