1990800638

Names of 1990800638

• Cardinal: 1990800638 can be written as One billion, nine hundred ninety million, eight hundred thousand, six hundred thirty-eight.

Scientific notation

• Scientific notation: 1.990800638 × 10⁹

Factors of 1990800638

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 269962

Divisors of 1990800638

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 3739 7478 266221 532442 995400319 1990800638
• Sum of all divisors σ(n): 2987010840
• Sum of proper divisors (its aliquot sum) s(n): 996210202
• 1990800638 is a deficient number, because the sum of its proper divisors (996210202) is less than itself. Its deficiency is 994590436

Bases of 1990800638

• Binary: 1110110101010010011010011111110₂
• Hexadecimal: 0x76A934FE
• Base-36: WX9RLQ

Squares and roots of 1990800638

• 1990800638 squared (1990800638²) is 3963287180261207044
• 1990800638 cubed (1990800638³) is 7890114647041231989845294072
• The square root of 1990800638 is 44618.3890117069
• The cube root of 1990800638 is 1257.9863355279

Scales and comparisons

• 1,990,800,638 seconds is equal to 63 years, 15 weeks, 4 days, 16 hours, 10 minutes, 38 seconds.
• To count from 1 to 1,990,800,638 would take you about one hundred twenty-six 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 1990800638 cubic inches would be around 104.8 feet tall.

Recreational maths with 1990800638

• 1990800638 backwards is 8360080991
• The number of decimal digits it has is: 10
• The sum of 1990800638's digits is 44
• More coming soon!