18239307438

Names of 18239307438

• Cardinal: 18239307438 can be written as Eighteen billion, two hundred thirty-nine million, three hundred seven thousand, four hundred thirty-eight.

Scientific notation

• Scientific notation: 1.8239307438 × 10¹⁰

Factors of 18239307438

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 1067

Divisors of 18239307438

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 6 11 22 33 66 121 127 242 254 337 363 381 587 674 726 762 1011 1174 1397 1761 2022 2794 3522 3707 4191 6457 7414 8382 11121 12914 15367 19371 22242 30734 38742 40777 42799 46101 71027 74549 81554 85598 92202 122331 128397 142054 149098 197819 213081 223647 244662 256794 395638 426162 447294 470789 593457 820039 941578 1186914 1412367 1640078 2176009 2460117 2824734 4352018 4920234 5178679 6528027 9020429 10357358 13056054 15536037 18040858 23936099 25123013 27061287 31072074 47872198 50246026 54122574 71808297 75369039 143616594 150738078 276353143 552706286 829059429 1658118858 3039884573 6079769146 9119653719 18239307438
• Sum of all divisors σ(n): 40601014272
• Sum of proper divisors (its aliquot sum) s(n): 22361706834
• 18239307438 is an abundant number, because the sum of its proper divisors (22361706834) is greater than itself. Its abundance is 4122399396

Bases of 18239307438

• Binary: 10000111111001001011011111010101110₂
• Hexadecimal: 0x43F25BEAE
• Base-36: 8DN7NOU

Squares and roots of 18239307438

• 18239307438 squared (18239307438²) is 332672335817882123844
• 18239307438 cubed (18239307438³) is 6067713009099931234835106351672
• The square root of 18239307438 is 135052.9801152123
• The cube root of 18239307438 is 2632.3044295731

Scales and comparisons

• 18,239,307,438 seconds is equal to 579 years, 49 weeks, 4 days, 2 hours, 17 minutes, 18 seconds.
• To count from 1 to 18,239,307,438 would take you about one thousand, one hundred fifty-nine 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 18239307438 cubic inches would be around 219.4 feet tall.

Recreational maths with 18239307438

• 18239307438 backwards is 83470393281
• The number of decimal digits it has is: 11
• The sum of 18239307438's digits is 48
• More coming soon!