18015939648

Names of 18015939648

• Cardinal: 18015939648 can be written as Eighteen billion, fifteen million, nine hundred thirty-nine thousand, six hundred forty-eight.

Scientific notation

• Scientific notation: 1.8015939648 × 10¹⁰

Factors of 18015939648

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 496483

Divisors of 18015939648

• Number of divisors d(n): 140
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 32 36 42 48 54 56 63 64 72 81 84 96 108 112 126 144 162 168 189 192 216 224 252 288 324 336 378 432 448 504 567 576 648 672 756 864 1008 1134 1296 1344 1512 1728 2016 2268 2592 3024 4032 4536 5184 6048 9072 12096 18144 36288 496471 992942 1489413 1985884 2978826 3475297 3971768 4468239 5957652 6950594 7943536 8936478 10425891 11915304 13404717 13901188 15887072 17872956 20851782 23830608 26809434 27802376 31277673 31774144 35745912 40214151 41703564 47661216 53618868 55604752 62555346 71491824 80428302 83407128 93833019 95322432 107237736 111209504 125110692 142983648 160856604 166814256 187666038 214475472 222419008 250221384 281499057 285967296 321713208 333628512 375332076 428950944 500442768 562998114 643426416 667257024 750664152 857901888 1000885536 1125996228 1286852832 1501328304 2001771072 2251992456 2573705664 3002656608 4503984912 6005313216 9007969824 18015939648
• Sum of all divisors σ(n): 61034281792
• Sum of proper divisors (its aliquot sum) s(n): 43018342144
• 18015939648 is an abundant number, because the sum of its proper divisors (43018342144) is greater than itself. Its abundance is 25002402496

Bases of 18015939648

• Binary: 10000110001110101010110110001000000₂
• Hexadecimal: 0x431D56C40
• Base-36: 89Y8400

Squares and roots of 18015939648

• 18015939648 squared (18015939648²) is 324574081400378363904
• 18015939648 cubed (18015939648³) is 5847507061814255928459445665792
• The square root of 18015939648 is 134223.4690655849
• The cube root of 18015939648 is 2621.5147529253

Scales and comparisons

• 18,015,939,648 seconds is equal to 572 years, 44 weeks, 1 day, 19 hours, 40 minutes, 48 seconds.
• To count from 1 to 18,015,939,648 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 18015939648 cubic inches would be around 218.5 feet tall.

Recreational maths with 18015939648

• 18015939648 backwards is 84693951081
• 18015939648 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18015939648's digits is 54
• More coming soon!