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16931964942 = 232940664719
BaseRepresentation
bin11111100010011100…
…10100100000001110
31121201000110221100200
433301032110200032
5234134040334232
611440050434330
71136406220164
oct176116244016
947630427320
1016931964942
1171a971a962
1233465929a6
13179ab92089
14b68a4d234
1569173877c
hex3f139480e

16931964942 has 12 divisors (see below), whose sum is σ = 36685924080. Its totient is φ = 5643988308.

The previous prime is 16931964923. The next prime is 16931964953. The reversal of 16931964942 is 24946913961.

It is a happy number.

16931964942 is a `hidden beast` number, since 1 + 69 + 3 + 1 + 96 + 494 + 2 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 470332342 + ... + 470332377.

It is an arithmetic number, because the mean of its divisors is an integer number (3057160340).

Almost surely, 216931964942 is an apocalyptic number.

16931964942 is an abundant number, since it is smaller than the sum of its proper divisors (19753959138).

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

16931964942 is a wasteful number, since it uses less digits than its factorization.

16931964942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940664727 (or 940664724 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 54.

The spelling of 16931964942 in words is "sixteen billion, nine hundred thirty-one million, nine hundred sixty-four thousand, nine hundred forty-two".

Divisors: 1 2 3 6 9 18 940664719 1881329438 2821994157 5643988314 8465982471 16931964942