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18963014874 = 236474884857
BaseRepresentation
bin10001101010010010…
…001010010011011010
31210221120020222002020
4101222102022103122
5302314012433444
612413403115310
71240630652436
oct215222122332
953846228066
1018963014874
118051144821
123812812b36
131a328bb27b
14cbc6ab9c6
1575ebd1119
hex46a48a4da

18963014874 has 16 divisors (see below), whose sum is σ = 37984655808. Its totient is φ = 6311233952.

The previous prime is 18963014857. The next prime is 18963014881. The reversal of 18963014874 is 47841036981.

It is a super-2 number, since 2×189630148742 (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2438547 + ... + 2446310.

It is an arithmetic number, because the mean of its divisors is an integer number (2374040988).

Almost surely, 218963014874 is an apocalyptic number.

18963014874 is an abundant number, since it is smaller than the sum of its proper divisors (19021640934).

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

18963014874 is a wasteful number, since it uses less digits than its factorization.

18963014874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4885509.

The product of its (nonzero) digits is 1161216, while the sum is 51.

The spelling of 18963014874 in words is "eighteen billion, nine hundred sixty-three million, fourteen thousand, eight hundred seventy-four".

Divisors: 1 2 3 6 647 1294 1941 3882 4884857 9769714 14654571 29309142 3160502479 6321004958 9481507437 18963014874