181220164790

Names of 181220164790

• Cardinal: 181220164790 can be written as One hundred eighty-one billion, two hundred twenty million, one hundred sixty-four thousand, seven hundred ninety.

Scientific notation

• Scientific notation: 1.8122016479 × 10¹¹

Factors of 181220164790

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 302

Divisors of 181220164790

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 5 7 10 14 19 35 38 49 70 95 98 133 190 245 266 269 490 538 665 931 1330 1345 1862 1883 2690 3766 4655 5111 9310 9415 10222 13181 18830 25555 26362 35777 51110 65905 71554 72361 131810 144722 178885 250439 357770 361805 500878 506527 723610 1013054 1252195 1374859 2504390 2532635 2749718 3545689 5065270 6874295 7091378 9624013 13748590 17728445 19248026 19465109 35456890 38930218 48120065 67368091 96240130 97325545 134736182 136255763 194651090 272511526 336840455 369837071 673680910 681278815 739674142 953790341 1362557630 1849185355 1907580682 2588859497 3698370710 4768951705 5177718994 9537903410 12944297485 18122016479 25888594970 36244032958 90610082395 181220164790
• Sum of all divisors σ(n): 400914424800
• Sum of proper divisors (its aliquot sum) s(n): 219694260010
• 181220164790 is an abundant number, because the sum of its proper divisors (219694260010) is greater than itself. Its abundance is 38474095220

Bases of 181220164790

• Binary: 10101000110001100100000100010010110110₂
• Hexadecimal: 0x2A319044B6
• Base-36: 2B91T22E

Squares and roots of 181220164790

• 181220164790 squared (181220164790²) is 32840748126514755744100
• 181220164790 cubed (181220164790³) is 5951405787313887804312401070239000
• The square root of 181220164790 is 425699.6180289571
• The cube root of 181220164790 is 5658.9454430683

Scales and comparisons

• 181,220,164,790 seconds is equal to 5,762 years, 12 weeks, 3 days, 14 hours, 39 minutes, 50 seconds.
• To count from 1 to 181,220,164,790 would take you about eleven thousand, five hundred twenty-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 181220164790 cubic inches would be around 471.6 feet tall.

Recreational maths with 181220164790

• 181220164790 backwards is 097461022181
• The number of decimal digits it has is: 12
• The sum of 181220164790's digits is 41
• More coming soon!