19804921890

Names of 19804921890

• Cardinal: 19804921890 can be written as Nineteen billion, eight hundred four million, nine hundred twenty-one thousand, eight hundred ninety.

Scientific notation

• Scientific notation: 1.980492189 × 10¹⁰

Factors of 19804921890

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 4788

Divisors of 19804921890

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 5 6 10 13 15 19 26 30 38 39 57 65 78 95 114 130 190 195 247 285 390 494 570 653 741 1235 1306 1482 1959 2470 3265 3705 3918 4093 6530 7410 8186 8489 9795 12279 12407 16978 19590 20465 24558 24814 25467 37221 40930 42445 50934 53209 61395 62035 74442 77767 84890 106418 122790 124070 127335 155534 159627 161291 186105 233301 254670 266045 319254 322582 372210 388835 466602 483873 532090 777670 798135 806455 967746 1010971 1166505 1596270 1612910 2021942 2333010 2419365 2672729 3032913 4838730 5054855 5345458 6065826 8018187 10109710 13363645 15164565 16036374 26727290 30329130 34745477 40090935 50781851 69490954 80181870 101563702 104236431 152345553 173727385 208472862 253909255 304691106 347454770 507818510 521182155 660164063 761727765 1042364310 1320328126 1523455530 1980492189 3300820315 3960984378 6601640630 9902460945 19804921890
• Sum of all divisors σ(n): 53977916160
• Sum of proper divisors (its aliquot sum) s(n): 34172994270
• 19804921890 is an abundant number, because the sum of its proper divisors (34172994270) is greater than itself. Its abundance is 14368072380

Bases of 19804921890

• Binary: 10010011100011101110010000000100010₂
• Hexadecimal: 0x49C772022
• Base-36: 93JC7J6

Squares and roots of 19804921890

• 19804921890 squared (19804921890²) is 392234931069001172100
• 19804921890 cubed (19804921890³) is 7768182172351102413758947269000
• The square root of 19804921890 is 140729.9608825355
• The cube root of 19804921890 is 2705.5633751053

Scales and comparisons

• 19,804,921,890 seconds is equal to 629 years, 38 weeks, 1 day, 15 hours, 11 minutes, 30 seconds.
• To count from 1 to 19,804,921,890 would take you about one thousand, two hundred fifty-nine 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 19804921890 cubic inches would be around 225.5 feet tall.

Recreational maths with 19804921890

• 19804921890 backwards is 09812940891
• The number of decimal digits it has is: 11
• The sum of 19804921890's digits is 51
• More coming soon!