18219492408

Names of 18219492408

• Cardinal: 18219492408 can be written as Eighteen billion, two hundred nineteen million, four hundred ninety-two thousand, four hundred eight.

Scientific notation

• Scientific notation: 1.8219492408 × 10¹⁰

Factors of 18219492408

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 15408

Divisors of 18219492408

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 4 6 8 12 13 24 26 39 52 78 104 156 312 6791 8599 13582 17198 20373 25797 27164 34396 40746 51594 54328 68792 81492 88283 103188 111787 162984 176566 206376 223574 264849 335361 353132 447148 529698 670722 706264 894296 1059396 1341444 2118792 2682888 58395809 116791618 175187427 233583236 350374854 467166472 700749708 759145517 1401499416 1518291034 2277436551 3036582068 4554873102 6073164136 9109746204 18219492408
• Sum of all divisors σ(n): 49065408000
• Sum of proper divisors (its aliquot sum) s(n): 30845915592
• 18219492408 is an abundant number, because the sum of its proper divisors (30845915592) is greater than itself. Its abundance is 12626423184

Bases of 18219492408

• Binary: 10000111101111101110110010000111000₂
• Hexadecimal: 0x43DF76438
• Base-36: 8DBEYBC

Squares and roots of 18219492408

• 18219492408 squared (18219492408²) is 331949903605169638464
• 18219492408 cubed (18219492408³) is 6047958748570720057546952781312
• The square root of 18219492408 is 134979.5999697733
• The cube root of 18219492408 is 2631.3508463799

Scales and comparisons

• 18,219,492,408 seconds is equal to 579 years, 16 weeks, 5 days, 18 hours, 6 minutes, 48 seconds.
• To count from 1 to 18,219,492,408 would take you about one thousand, one hundred fifty-eight 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 18219492408 cubic inches would be around 219.3 feet tall.

Recreational maths with 18219492408

• 18219492408 backwards is 80429491281
• The number of decimal digits it has is: 11
• The sum of 18219492408's digits is 48
• More coming soon!