18212209902

Names of 18212209902

• Cardinal: 18212209902 can be written as Eighteen billion, two hundred twelve million, two hundred nine thousand, nine hundred two.

Scientific notation

• Scientific notation: 1.8212209902 × 10¹⁰

Factors of 18212209902

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 262

Divisors of 18212209902

• Number of divisors d(n): 108
• Complete list of divisors:
  1 2 3 6 9 18 29 31 58 62 87 93 174 186 197 261 279 394 522 558 591 841 899 1182 1682 1773 1798 2523 2697 3546 5046 5394 5713 6107 7569 8091 11426 12214 15138 16182 17139 18321 26071 34278 36642 38809 51417 52142 54963 77618 78213 102834 109926 116427 156426 165677 177103 232854 234639 331354 349281 354206 469278 497031 531309 698562 994062 1062618 1125461 1203079 1491093 1593927 2250922 2406158 2982186 3187854 3376383 3609237 5135987 6752766 7218474 10129149 10271974 10827711 15407961 20258298 21655422 30815922 32638369 34889291 46223883 65276738 69778582 92447766 97915107 104667873 195830214 209335746 293745321 314003619 587490642 628007238 1011789439 2023578878 3035368317 6070736634 9106104951 18212209902
• Sum of all divisors σ(n): 42400921056
• Sum of proper divisors (its aliquot sum) s(n): 24188711154
• 18212209902 is an abundant number, because the sum of its proper divisors (24188711154) is greater than itself. Its abundance is 5976501252

Bases of 18212209902

• Binary: 10000111101100010000100010011101110₂
• Hexadecimal: 0x43D8844EE
• Base-36: 8D72V3I

Squares and roots of 18212209902

• 18212209902 squared (18212209902²) is 331684589514506849604
• 18212209902 cubed (18212209902³) is 6040709365496907019004793578808
• The square root of 18212209902 is 134952.6209526885
• The cube root of 18212209902 is 2631.0002075941

Scales and comparisons

• 18,212,209,902 seconds is equal to 579 years, 4 weeks, 5 days, 11 hours, 11 minutes, 42 seconds.
• To count from 1 to 18,212,209,902 would take you about one thousand, one hundred fifty-eight 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 18212209902 cubic inches would be around 219.3 feet tall.

Recreational maths with 18212209902

• 18212209902 backwards is 20990221281
• The number of decimal digits it has is: 11
• The sum of 18212209902's digits is 36
• More coming soon!