18994972672

Names of 18994972672

• Cardinal: 18994972672 can be written as Eighteen billion, nine hundred ninety-four million, nine hundred seventy-two thousand, six hundred seventy-two.

Scientific notation

• Scientific notation: 1.8994972672 × 10¹⁰

Factors of 18994972672

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 54896

Divisors of 18994972672

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 4 8 13 16 26 32 52 64 104 128 169 208 256 338 416 512 676 832 1024 1352 1664 2048 2704 3328 5408 6656 10816 13312 21632 26624 43264 54881 86528 109762 173056 219524 346112 439048 713453 878096 1426906 1756192 2853812 3512384 5707624 7024768 9274889 11415248 14049536 18549778 22830496 28099072 37099556 45660992 56198144 74199112 91321984 112396288 148398224 182643968 296796448 365287936 593592896 730575872 1187185792 1461151744 2374371584 4748743168 9497486336 18994972672
• Sum of all divisors σ(n): 41127747570
• Sum of proper divisors (its aliquot sum) s(n): 22132774898
• 18994972672 is an abundant number, because the sum of its proper divisors (22132774898) is greater than itself. Its abundance is 3137802226

Bases of 18994972672

• Binary: 10001101100001100000100100000000000₂
• Hexadecimal: 0x46C304800
• Base-36: 8Q546PS

Squares and roots of 18994972672

• 18994972672 squared (18994972672²) is 360808986810026819584
• 18994972672 cubed (18994972672³) is 6853556844268467893585154408448
• The square root of 18994972672 is 137822.2502791185
• The cube root of 18994972672 is 2668.1662783065

Scales and comparisons

• 18,994,972,672 seconds is equal to 603 years, 51 weeks, 5 hours, 17 minutes, 52 seconds.
• To count from 1 to 18,994,972,672 would take you about one thousand, two hundred seven 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 18994972672 cubic inches would be around 222.3 feet tall.

Recreational maths with 18994972672

• 18994972672 backwards is 27627949981
• 18994972672 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18994972672's digits is 64
• More coming soon!