1218372942

Names of 1218372942

• Cardinal: 1218372942 can be written as One billion, two hundred eighteen million, three hundred seventy-two thousand, nine hundred forty-two.

Scientific notation

• Scientific notation: 1.218372942 × 10⁹

Factors of 1218372942

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 203062162

Divisors of 1218372942

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 3 6 203062157 406124314 609186471 1218372942
• Sum of all divisors σ(n): 2436745896
• Sum of proper divisors (its aliquot sum) s(n): 1218372954
• 1218372942 is an abundant number, because the sum of its proper divisors (1218372954) is greater than itself. Its abundance is 12

Bases of 1218372942

• Binary: 1001000100111101110010101001110₂
• Hexadecimal: 0x489EE54E
• Base-36: K5DYKU

Squares and roots of 1218372942

• 1218372942 squared (1218372942²) is 1484432625797735364
• 1218372942 cubed (1218372942³) is 1808592545493971932374120888
• The square root of 1218372942 is 34905.1993548239
• The cube root of 1218372942 is 1068.0545024717

Scales and comparisons

• 1,218,372,942 seconds is equal to 38 years, 38 weeks, 3 days, 12 hours, 55 minutes, 42 seconds.
• To count from 1 to 1,218,372,942 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 1218372942 cubic inches would be around 89 feet tall.

Recreational maths with 1218372942

• 1218372942 backwards is 2492738121
• The number of decimal digits it has is: 10
• The sum of 1218372942's digits is 39
• More coming soon!