18491249430

Names of 18491249430

• Cardinal: 18491249430 can be written as Eighteen billion, four hundred ninety-one million, two hundred forty-nine thousand, four hundred thirty.

Scientific notation

• Scientific notation: 1.849124943 × 10¹⁰

Factors of 18491249430

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 9946

Divisors of 18491249430

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 3 5 6 9 10 15 18 27 30 45 54 81 90 135 162 270 405 810 3607 6329 7214 10821 12658 18035 18987 21642 31645 32463 36070 37974 54105 56961 63290 64926 94935 97389 108210 113922 162315 170883 189870 194778 284805 292167 324630 341766 486945 512649 569610 584334 854415 973890 1025298 1460835 1708830 2563245 2921670 5126490 22828703 45657406 68486109 114143515 136972218 205458327 228287030 342430545 410916654 616374981 684861090 1027291635 1232749962 1849124943 2054583270 3081874905 3698249886 6163749810 9245624715 18491249430
• Sum of all divisors σ(n): 49742557920
• Sum of proper divisors (its aliquot sum) s(n): 31251308490
• 18491249430 is an abundant number, because the sum of its proper divisors (31251308490) is greater than itself. Its abundance is 12760059060

Bases of 18491249430

• Binary: 10001001110001010100001001100010110₂
• Hexadecimal: 0x44E2A1316
• Base-36: 8HT7NDI

Squares and roots of 18491249430

• 18491249430 squared (18491249430²) is 341926305482475324900
• 18491249430 cubed (18491249430³) is 6322644601354827726546189807000
• The square root of 18491249430 is 135982.5335475111
• The cube root of 18491249430 is 2644.3691726169

Scales and comparisons

• 18,491,249,430 seconds is equal to 587 years, 50 weeks, 1 day, 2 hours, 10 minutes, 30 seconds.
• To count from 1 to 18,491,249,430 would take you about one thousand, one hundred seventy-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 18491249430 cubic inches would be around 220.4 feet tall.

Recreational maths with 18491249430

• 18491249430 backwards is 03494219481
• 18491249430 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18491249430's digits is 45
• More coming soon!