1999990125

Names of 1999990125

• Cardinal: 1999990125 can be written as One billion, nine hundred ninety-nine million, nine hundred ninety thousand, one hundred twenty-five.

Scientific notation

• Scientific notation: 1.999990125 × 10⁹

Factors of 1999990125

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 159

Divisors of 1999990125

• Number of divisors d(n): 192
• Complete list of divisors:
  1 3 5 7 9 15 21 25 35 45 49 63 71 73 75 105 125 147 175 213 219 225 245 315 343 355 365 375 441 497 511 525 639 657 735 875 1029 1065 1095 1125 1225 1491 1533 1575 1715 1775 1825 2205 2485 2555 2625 3087 3195 3285 3479 3577 3675 4473 4599 5145 5183 5325 5475 6125 7455 7665 7875 8575 8875 9125 10437 10731 11025 12425 12775 15435 15549 15975 16425 17395 17885 18375 22365 22995 24353 25039 25725 25915 26625 27375 31311 32193 36281 37275 38325 42875 46647 52185 53655 55125 62125 63875 73059 75117 77175 77745 79875 82125 86975 89425 108843 111825 114975 121765 125195 128625 129575 156555 160965 181405 186375 191625 219177 225351 233235 253967 260925 268275 326529 365295 375585 385875 388725 434875 447125 544215 559125 574875 608825 625975 647875 761901 782775 804825 907025 1095885 1126755 1166175 1269835 1304625 1341375 1632645 1777769 1826475 1877925 1943625 2285703 2721075 3044125 3129875 3809505 3913875 4024125 4535125 5333307 5479425 5633775 5830875 6349175 8163225 8888845 9132375 9389625 11428515 13605375 15999921 19047525 26666535 27397125 28168875 31745875 40816125 44444225 57142575 79999605 95237625 133332675 222221125 285712875 399998025 666663375 1999990125
• Sum of all divisors σ(n): 4322073600
• Sum of proper divisors (its aliquot sum) s(n): 2322083475
• 1999990125 is an abundant number, because the sum of its proper divisors (2322083475) is greater than itself. Its abundance is 322093350

Bases of 1999990125

• Binary: 1110111001101010110110101101101₂
• Hexadecimal: 0x77356D6D
• Base-36: X2QQ99

Squares and roots of 1999990125

• 1999990125 squared (1999990125²) is 3999960500097515625
• 1999990125 cubed (1999990125³) is 7999881500585092787033203125
• The square root of 1999990125 is 44721.2491440031
• The cube root of 1999990125 is 1259.9189762713

Scales and comparisons

• 1,999,990,125 seconds is equal to 63 years, 30 weeks, 6 days, 48 minutes, 45 seconds.
• To count from 1 to 1,999,990,125 would take you about one hundred twenty-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 1999990125 cubic inches would be around 105 feet tall.

Recreational maths with 1999990125

• 1999990125 backwards is 5210999991
• The number of decimal digits it has is: 10
• The sum of 1999990125's digits is 54
• More coming soon!