18209289644

Names of 18209289644

• Cardinal: 18209289644 can be written as Eighteen billion, two hundred nine million, two hundred eighty-nine thousand, six hundred forty-four.

Scientific notation

• Scientific notation: 1.8209289644 × 10¹⁰

Factors of 18209289644

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 885

Divisors of 18209289644

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 4 7 13 14 26 28 49 52 91 98 169 182 196 338 343 364 637 676 686 863 1183 1274 1372 1726 2197 2366 2401 2548 3452 4394 4459 4732 4802 6041 8281 8788 8918 9604 11219 12082 15379 16562 17836 22438 24164 30758 31213 33124 42287 44876 57967 61516 62426 78533 84574 107653 115934 124852 145847 157066 169148 215306 231868 291694 296009 314132 405769 430612 549731 583388 592018 753571 811538 1020929 1099462 1184036 1507142 1623076 1896011 2041858 2072063 2198924 3014284 3792022 3848117 4083716 4144126 5274997 7146503 7584044 7696234 8288252 10549994 13272077 14293006 15392468 21099988 26544154 26936819 28586012 50025521 53088308 53873638 92904539 100051042 107747276 185809078 200102084 350178647 371618156 650331773 700357294 1300663546 1400714588 2601327092 4552322411 9104644822 18209289644
• Sum of all divisors σ(n): 40318266240
• Sum of proper divisors (its aliquot sum) s(n): 22108976596
• 18209289644 is an abundant number, because the sum of its proper divisors (22108976596) is greater than itself. Its abundance is 3899686952

Bases of 18209289644

• Binary: 10000111101010110111011010110101100₂
• Hexadecimal: 0x43D5BB5AC
• Base-36: 8D5C9T8

Squares and roots of 18209289644

• 18209289644 squared (18209289644²) is 331578229339085646736
• 18209289644 cubed (18209289644³) is 6037804017680069231538887201984
• The square root of 18209289644 is 134941.8009513731
• The cube root of 18209289644 is 2630.8595764801

Scales and comparisons

• 18,209,289,644 seconds is equal to 578 years, 51 weeks, 6 days, 16 hours, 44 seconds.
• To count from 1 to 18,209,289,644 would take you about one thousand, one hundred fifty-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 18209289644 cubic inches would be around 219.2 feet tall.

Recreational maths with 18209289644

• 18209289644 backwards is 44698290281
• The number of decimal digits it has is: 11
• The sum of 18209289644's digits is 53
• More coming soon!