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13161939498 = 2321913828371
BaseRepresentation
bin11000100001000001…
…10100001000101010
31020222021111210200200
430100200310020222
5203423424030443
610014014013030
7644110432311
oct142040641052
936867453620
1013161939498
115644631a54
122673aa7176
131319ac11a6
148cc081278
1552078ddd3
hex31083422a

13161939498 has 24 divisors (see below), whose sum is σ = 28666849536. Its totient is φ = 4364341800.

The previous prime is 13161939463. The next prime is 13161939509. The reversal of 13161939498 is 89493916131.

13161939498 is a `hidden beast` number, since 1 + 3 + 1 + 61 + 93 + 9 + 498 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1910748 + ... + 1917623.

It is an arithmetic number, because the mean of its divisors is an integer number (1194452064).

Almost surely, 213161939498 is an apocalyptic number.

13161939498 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13161939498 is an abundant number, since it is smaller than the sum of its proper divisors (15504910038).

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

13161939498 is a wasteful number, since it uses less digits than its factorization.

13161939498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3828570 (or 3828567 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 54.

The spelling of 13161939498 in words is "thirteen billion, one hundred sixty-one million, nine hundred thirty-nine thousand, four hundred ninety-eight".

Divisors: 1 2 3 6 9 18 191 382 573 1146 1719 3438 3828371 7656742 11485113 22970226 34455339 68910678 731218861 1462437722 2193656583 4387313166 6580969749 13161939498