1218132825

Names of 1218132825

• Cardinal: 1218132825 can be written as One billion, two hundred eighteen million, one hundred thirty-two thousand, eight hundred twenty-five.

Scientific notation

• Scientific notation: 1.218132825 × 10⁹

Factors of 1218132825

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 178509

Divisors of 1218132825

• Number of divisors d(n): 48
• Complete list of divisors:
  1 3 5 7 13 15 21 25 35 39 65 75 91 105 175 195 273 325 455 525 975 1365 2275 6825 178481 535443 892405 1249367 2320253 2677215 3748101 4462025 6246835 6960759 11601265 13386075 16241771 18740505 31234175 34803795 48725313 58006325 81208855 93702525 174018975 243626565 406044275 1218132825
• Sum of all divisors σ(n): 2478758016
• Sum of proper divisors (its aliquot sum) s(n): 1260625191
• 1218132825 is an abundant number, because the sum of its proper divisors (1260625191) is greater than itself. Its abundance is 42492366

Bases of 1218132825

• Binary: 1001000100110110011101101011001₂
• Hexadecimal: 0x489B3B59
• Base-36: K58TAX

Squares and roots of 1218132825

• 1218132825 squared (1218132825²) is 1483847579342480625
• 1218132825 cubed (1218132825³) is 1807523443693867566239015625
• The square root of 1218132825 is 34901.7596261279
• The cube root of 1218132825 is 1067.9843337839

Scales and comparisons

• 1,218,132,825 seconds is equal to 38 years, 38 weeks, 18 hours, 13 minutes, 45 seconds.
• To count from 1 to 1,218,132,825 would take you about seventy-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 1218132825 cubic inches would be around 89 feet tall.

Recreational maths with 1218132825

• 1218132825 backwards is 5282318121
• The number of decimal digits it has is: 10
• The sum of 1218132825's digits is 33
• More coming soon!