18368394840

Names of 18368394840

• Cardinal: 18368394840 can be written as Eighteen billion, three hundred sixty-eight million, three hundred ninety-four thousand, eight hundred forty.

Scientific notation

• Scientific notation: 1.836839484 × 10¹⁰

Factors of 18368394840

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 51724

Divisors of 18368394840

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 18 20 24 27 30 36 40 45 54 60 72 90 108 120 135 180 216 270 331 360 540 662 993 1080 1324 1655 1986 2648 2979 3310 3972 4965 5958 6620 7944 8937 9930 11916 13240 14895 17874 19860 23832 29790 35748 39720 44685 51383 59580 71496 89370 102766 119160 154149 178740 205532 256915 308298 357480 411064 462447 513830 616596 770745 924894 1027660 1233192 1387341 1541490 1849788 2055320 2312235 2774682 3082980 3699576 4624470 5549364 6165960 6936705 9248940 11098728 13873410 17007773 18497880 27746820 34015546 51023319 55493640 68031092 85038865 102046638 136062184 153069957 170077730 204093276 255116595 306139914 340155460 408186552 459209871 510233190 612279828 680310920 765349785 918419742 1020466380 1224559656 1530699570 1836839484 2040932760 2296049355 3061399140 3673678968 4592098710 6122798280 9184197420 18368394840
• Sum of all divisors σ(n): 61414156800
• Sum of proper divisors (its aliquot sum) s(n): 43045761960
• 18368394840 is an abundant number, because the sum of its proper divisors (43045761960) is greater than itself. Its abundance is 24677367120

Bases of 18368394840

• Binary: 10001000110110101110111011001011000₂
• Hexadecimal: 0x446D77658
• Base-36: 8FS2G60

Squares and roots of 18368394840

• 18368394840 squared (18368394840²) is 337397928998138625600
• 18368394840 cubed (18368394840³) is 6197458378036095900075731904000
• The square root of 18368394840 is 135530.0514277185
• The cube root of 18368394840 is 2638.4998191707

Scales and comparisons

• 18,368,394,840 seconds is equal to 584 years, 3 weeks, 3 hours, 54 minutes.
• To count from 1 to 18,368,394,840 would take you about one thousand, one hundred sixty-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 18368394840 cubic inches would be around 219.9 feet tall.

Recreational maths with 18368394840

• 18368394840 backwards is 04849386381
• 18368394840 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18368394840's digits is 54
• More coming soon!