18918989070

Names of 18918989070

• Cardinal: 18918989070 can be written as Eighteen billion, nine hundred eighteen million, nine hundred eighty-nine thousand and seventy.

Scientific notation

• Scientific notation: 1.891898907 × 10¹⁰

Factors of 18918989070

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1738

Divisors of 18918989070

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 5 6 10 15 17 30 31 34 43 51 62 85 86 93 102 129 155 170 186 215 255 258 289 310 430 465 510 527 578 645 731 867 930 1054 1290 1333 1445 1462 1581 1637 1734 2193 2635 2666 2890 3162 3274 3655 3999 4335 4386 4911 5270 6665 7310 7905 7998 8185 8670 8959 9822 10965 12427 13330 15810 16370 17918 19995 21930 22661 24555 24854 26877 27829 37281 39990 44795 45322 49110 50747 53754 55658 62135 67983 70391 74562 83487 89590 101494 113305 124270 134385 135966 139145 140782 152241 166974 186405 211173 226610 253735 268770 278290 304482 339915 351955 372810 385237 417435 422346 473093 507470 679830 703910 761205 770474 834870 862699 946186 1055865 1155711 1196647 1419279 1522410 1725398 1926185 2111730 2182121 2311422 2365465 2393294 2588097 2838558 3589941 3852370 4313495 4364242 4730930 5176194 5778555 5983235 6546363 7096395 7179882 8626990 10910605 11557110 11966470 12940485 13092726 14192790 14665883 17949705 20342999 21821210 25880970 29331766 32731815 35899410 37096057 40685998 43997649 61028997 65463630 73329415 74192114 87995298 101714995 111288171 122057994 146658830 185480285 203429990 219988245 222576342 305144985 370960570 439976490 556440855 610289970 630632969 1112881710 1261265938 1891898907 3153164845 3783797814 6306329690 9459494535 18918989070
• Sum of all divisors σ(n): 50978543616
• Sum of proper divisors (its aliquot sum) s(n): 32059554546
• 18918989070 is an abundant number, because the sum of its proper divisors (32059554546) is greater than itself. Its abundance is 13140565476

Bases of 18918989070

• Binary: 10001100111101010001101110100001110₂
• Hexadecimal: 0x467A8DD0E
• Base-36: 8OVVLE6

Squares and roots of 18918989070

• 18918989070 squared (18918989070²) is 357928147430779464900
• 18918989070 cubed (18918989070³) is 6771638709088265278023548643000
• The square root of 18918989070 is 137546.3160902537
• The cube root of 18918989070 is 2664.6037950559

Scales and comparisons

• 18,918,989,070 seconds is equal to 601 years, 29 weeks, 2 days, 18 hours, 44 minutes, 30 seconds.
• To count from 1 to 18,918,989,070 would take you about one thousand, two hundred three 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 18918989070 cubic inches would be around 222.1 feet tall.

Recreational maths with 18918989070

• 18918989070 backwards is 07098981981
• The number of decimal digits it has is: 11
• The sum of 18918989070's digits is 60
• More coming soon!