18291961338

Names of 18291961338

• Cardinal: 18291961338 can be written as Eighteen billion, two hundred ninety-one million, nine hundred sixty-one thousand, three hundred thirty-eight.

Scientific notation

• Scientific notation: 1.8291961338 × 10¹⁰

Factors of 18291961338

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 14651

Divisors of 18291961338

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 6 7 14 21 42 53 106 159 318 371 587 742 1113 1174 1761 2226 3522 4109 8218 12327 13999 24654 27998 31111 41997 62222 83994 93333 97993 186666 195986 217777 293979 435554 587958 653331 741947 1306662 1483894 2225841 4451682 5193629 8217413 10387258 15580887 16434826 24652239 31161774 49304478 57521891 115043782 172565673 345131346 435522889 871045778 1306568667 2613137334 3048660223 6097320446 9145980669 18291961338
• Sum of all divisors σ(n): 42674688000
• Sum of proper divisors (its aliquot sum) s(n): 24382726662
• 18291961338 is an abundant number, because the sum of its proper divisors (24382726662) is greater than itself. Its abundance is 6090765324

Bases of 18291961338

• Binary: 10001000010010010010010110111111010₂
• Hexadecimal: 0x442492DFA
• Base-36: 8EIK7P6

Squares and roots of 18291961338

• 18291961338 squared (18291961338²) is 334595849590886750244
• 18291961338 cubed (18291961338³) is 6120414344571763552599710066472
• The square root of 18291961338 is 135247.7775713895
• The cube root of 18291961338 is 2634.8350069221

Scales and comparisons

• 18,291,961,338 seconds is equal to 581 years, 32 weeks, 4 days, 12 hours, 22 minutes, 18 seconds.
• To count from 1 to 18,291,961,338 would take you about one thousand, one hundred sixty-three 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 18291961338 cubic inches would be around 219.6 feet tall.

Recreational maths with 18291961338

• 18291961338 backwards is 83316919281
• The number of decimal digits it has is: 11
• The sum of 18291961338's digits is 51
• More coming soon!