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18673050984 = 2337111149113
BaseRepresentation
bin10001011001000000…
…000010010101101000
31210012100122021101220
4101121000002111220
5301220300112414
612324524142040
71230510212610
oct213100022550
953170567356
1018673050984
117a124a5645
123751697920
1319b77c55c3
14c91d8ba40
15744505ca9
hex459002568

18673050984 has 32 divisors (see below), whose sum is σ = 53351574720. Its totient is φ = 5335157376.

The previous prime is 18673050967. The next prime is 18673050989. The reversal of 18673050984 is 48905037681.

It is not an unprimeable number, because it can be changed into a prime (18673050989) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 55574389 + ... + 55574724.

It is an arithmetic number, because the mean of its divisors is an integer number (1667236710).

Almost surely, 218673050984 is an apocalyptic number.

18673050984 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18673050984 is an abundant number, since it is smaller than the sum of its proper divisors (34678523736).

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

18673050984 is a wasteful number, since it uses less digits than its factorization.

18673050984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111149129 (or 111149125 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 51.

The spelling of 18673050984 in words is "eighteen billion, six hundred seventy-three million, fifty thousand, nine hundred eighty-four".

Divisors: 1 2 3 4 6 7 8 12 14 21 24 28 42 56 84 168 111149113 222298226 333447339 444596452 666894678 778043791 889192904 1333789356 1556087582 2334131373 2667578712 3112175164 4668262746 6224350328 9336525492 18673050984