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19014713970 = 23573114919603
BaseRepresentation
bin10001101101010111…
…011000001001110010
31211002011112112220120
4101231113120021302
5302420231321340
612422451151110
71242126254610
oct215527301162
954064475816
1019014713970
11807834604a
123827ba5496
131a4051cb55
14cc54c86b0
157644e44d0
hex46d5d8272

19014713970 has 128 divisors (see below), whose sum is σ = 54201139200. Its totient is φ = 4177578240.

The previous prime is 19014713959. The next prime is 19014714011. The reversal of 19014713970 is 7931741091.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 960189 + ... + 979791.

It is an arithmetic number, because the mean of its divisors is an integer number (423446400).

Almost surely, 219014713970 is an apocalyptic number.

19014713970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 19014713970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27100569600).

19014713970 is an abundant number, since it is smaller than the sum of its proper divisors (35186425230).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19014713970 is a wasteful number, since it uses less digits than its factorization.

19014713970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19800.

The product of its (nonzero) digits is 47628, while the sum is 42.

The spelling of 19014713970 in words is "nineteen billion, fourteen million, seven hundred thirteen thousand, nine hundred seventy".

Divisors: 1 2 3 5 6 7 10 14 15 21 30 31 35 42 62 70 93 105 149 155 186 210 217 298 310 434 447 465 651 745 894 930 1043 1085 1302 1490 2086 2170 2235 3129 3255 4470 4619 5215 6258 6510 9238 10430 13857 15645 19603 23095 27714 31290 32333 39206 46190 58809 64666 69285 96999 98015 117618 137221 138570 161665 193998 196030 274442 294045 323330 411663 484995 588090 607693 686105 823326 969990 1215386 1372210 1823079 2058315 2920847 3038465 3646158 4116630 4253851 5841694 6076930 8507702 8762541 9115395 12761553 14604235 17525082 18230790 20445929 21269255 25523106 29208470 40891858 42538510 43812705 61337787 63807765 87625410 90546257 102229645 122675574 127615530 181092514 204459290 271638771 306688935 452731285 543277542 613377870 633823799 905462570 1267647598 1358193855 1901471397 2716387710 3169118995 3802942794 6338237990 9507356985 19014713970