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20013141918 = 23711291493741
BaseRepresentation
bin10010101000111000…
…000100111110011110
31220122202020221120110
4102220320010332132
5311441331020133
613105515030450
71305641620350
oct225070047636
956582227513
1020013141918
11853a995810
123a6643b426
131b6c329613
14d7bd470d0
157c1eb4c63
hex4a8e04f9e

20013141918 has 64 divisors (see below), whose sum is σ = 51623723520. Its totient is φ = 5018966400.

The previous prime is 20013141877. The next prime is 20013141923. The reversal of 20013141918 is 81914131002.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 733473 + ... + 760268.

It is an arithmetic number, because the mean of its divisors is an integer number (806620680).

Almost surely, 220013141918 is an apocalyptic number.

20013141918 is an abundant number, since it is smaller than the sum of its proper divisors (31610581602).

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

20013141918 is a wasteful number, since it uses less digits than its factorization.

20013141918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1493793.

The product of its (nonzero) digits is 1728, while the sum is 30.

The spelling of 20013141918 in words is "twenty billion, thirteen million, one hundred forty-one thousand, nine hundred eighteen".

Divisors: 1 2 3 6 7 11 14 21 22 29 33 42 58 66 77 87 154 174 203 231 319 406 462 609 638 957 1218 1914 2233 4466 6699 13398 1493741 2987482 4481223 8962446 10456187 16431151 20912374 31368561 32862302 43318489 49293453 62737122 86636978 98586906 115018057 129955467 230036114 259910934 303229423 345054171 476503379 606458846 690108342 909688269 953006758 1429510137 1819376538 2859020274 3335523653 6671047306 10006570959 20013141918