18910821804

Names of 18910821804

• Cardinal: 18910821804 can be written as Eighteen billion, nine hundred ten million, eight hundred twenty-one thousand, eight hundred four.

Scientific notation

• Scientific notation: 1.8910821804 × 10¹⁰

Factors of 18910821804

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 5293

Divisors of 18910821804

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 6 7 12 14 21 28 37 42 74 84 111 148 222 259 444 518 777 1036 1554 1733 3108 3466 3511 5199 6932 7022 10398 10533 12131 14044 20796 21066 24262 24577 36393 42132 48524 49154 64121 72786 73731 98308 128242 129907 145572 147462 192363 256484 259814 294924 384726 389721 448847 519628 769452 779442 897694 909349 1346541 1558884 1795388 1818698 2693082 2728047 3637396 5386164 5456094 6084563 10912188 12169126 18253689 24338252 36507378 42591941 73014756 85183882 127775823 170367764 225128831 255551646 450257662 511103292 675386493 900515324 1350772986 1575901817 2701545972 3151803634 4727705451 6303607268 9455410902 18910821804
• Sum of all divisors σ(n): 51836445696
• Sum of proper divisors (its aliquot sum) s(n): 32925623892
• 18910821804 is an abundant number, because the sum of its proper divisors (32925623892) is greater than itself. Its abundance is 14014802088

Bases of 18910821804

• Binary: 10001100111001011000011110110101100₂
• Hexadecimal: 0x4672C3DAC
• Base-36: 8OR0JHO

Squares and roots of 18910821804

• 18910821804 squared (18910821804²) is 357619181302641814416
• 18910821804 cubed (18910821804³) is 6762872611306627946860214326464
• The square root of 18910821804 is 137516.6237369139
• The cube root of 18910821804 is 2664.2203062719

Scales and comparisons

• 18,910,821,804 seconds is equal to 601 years, 15 weeks, 6 days, 6 hours, 3 minutes, 24 seconds.
• To count from 1 to 18,910,821,804 would take you about one thousand, two hundred two 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 18910821804 cubic inches would be around 222 feet tall.

Recreational maths with 18910821804

• 18910821804 backwards is 40812801981
• 18910821804 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18910821804's digits is 42
• More coming soon!