19720168818

Names of 19720168818

• Cardinal: 19720168818 can be written as Nineteen billion, seven hundred twenty million, one hundred sixty-eight thousand, eight hundred eighteen.

Scientific notation

• Scientific notation: 1.9720168818 × 10¹⁰

Factors of 19720168818

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 797223

Divisors of 19720168818

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 6 7 14 19 21 31 38 42 57 62 93 114 133 186 217 266 399 434 589 651 798 1178 1302 1767 3534 4123 8246 12369 24738 797161 1594322 2391483 4782966 5580127 11160254 15146059 16740381 24711991 30292118 33480762 45438177 49423982 74135973 90876354 106022413 148271946 172983937 212044826 318067239 345967874 469527829 518951811 636134478 939055658 1037903622 1408583487 2817166974 3286694803 6573389606 9860084409 19720168818
• Sum of all divisors σ(n): 48977633280
• Sum of proper divisors (its aliquot sum) s(n): 29257464462
• 19720168818 is an abundant number, because the sum of its proper divisors (29257464462) is greater than itself. Its abundance is 9537295644

Bases of 19720168818

• Binary: 10010010111011010011110010101110010₂
• Hexadecimal: 0x49769E572
• Base-36: 924VNN6

Squares and roots of 19720168818

• 19720168818 squared (19720168818²) is 388885058210419517124
• 19720168818 cubed (19720168818³) is 7668878998707229844287321839432
• The square root of 19720168818 is 140428.5185352321
• The cube root of 19720168818 is 2701.6984657675

Scales and comparisons

• 19,720,168,818 seconds is equal to 627 years, 2 weeks, 16 hours, 40 minutes, 18 seconds.
• To count from 1 to 19,720,168,818 would take you about one thousand, two hundred fifty-four 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 19720168818 cubic inches would be around 225.1 feet tall.

Recreational maths with 19720168818

• 19720168818 backwards is 81886102791
• The number of decimal digits it has is: 11
• The sum of 19720168818's digits is 51
• More coming soon!