13186878138

Names of 13186878138

• Cardinal: 13186878138 can be written as Thirteen billion, one hundred eighty-six million, eight hundred seventy-eight thousand, one hundred thirty-eight.

Scientific notation

• Scientific notation: 1.3186878138 × 10¹⁰

Factors of 13186878138

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 4229

Divisors of 13186878138

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 6 7 9 14 17 18 21 27 34 42 49 51 54 63 71 98 102 119 126 142 147 153 189 213 238 294 306 357 378 426 441 459 497 639 714 833 882 918 994 1071 1207 1278 1323 1491 1666 1917 2142 2414 2499 2646 2982 3213 3479 3621 3834 4129 4473 4998 6426 6958 7242 7497 8258 8449 8946 10437 10863 12387 13419 14994 16898 20874 21726 22491 24774 25347 26838 28903 31311 32589 37161 44982 50694 57806 59143 62622 65178 70193 74322 76041 86709 93933 111483 118286 140386 152082 173418 177429 187866 202321 210579 222966 228123 260127 293159 354858 404642 421158 456246 491351 520254 532287 586318 606963 631737 780381 879477 982702 1064574 1213926 1263474 1474053 1560762 1596861 1758954 1820889 1895211 2052113 2638431 2948106 3193722 3439457 3641778 3790422 4104226 4422159 4983703 5276862 5462667 6156339 6878914 7915293 8844318 9967406 10318371 10925334 12312678 13266477 14364791 14951109 15830586 18469017 20636742 26532954 28729582 29902218 30955113 34885921 36938034 43094373 44853327 55407051 61910226 69771842 86188746 89706654 92865339 104657763 110814102 129283119 134559981 185730678 209315526 244201447 258566238 269119962 313973289 387849357 488402894 627946578 732604341 775698714 941919867 1465208682 1883839734 2197813023 4395626046 6593439069 13186878138
• Sum of all divisors σ(n): 36610963200
• Sum of proper divisors (its aliquot sum) s(n): 23424085062
• 13186878138 is an abundant number, because the sum of its proper divisors (23424085062) is greater than itself. Its abundance is 10237206924

Bases of 13186878138

• Binary: 1100010001111111111100101010111010₂
• Hexadecimal: 0x311FFCABA
• Base-36: 6234KAI

Squares and roots of 13186878138

• 13186878138 squared (13186878138²) is 173893755026462347044
• 13186878138 cubed (13186878138³) is 2293115756493183935714692524072
• The square root of 13186878138 is 114834.1331573499
• The cube root of 13186878138 is 2362.5481274147

Scales and comparisons

• 13,186,878,138 seconds is equal to 419 years, 15 weeks, 4 days, 21 hours, 42 minutes, 18 seconds.
• To count from 1 to 13,186,878,138 would take you about eight hundred thirty-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 13186878138 cubic inches would be around 196.9 feet tall.

Recreational maths with 13186878138

• 13186878138 backwards is 83187868131
• 13186878138 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 13186878138's digits is 54
• More coming soon!