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18514030974 = 2317029181201
BaseRepresentation
bin10001001111100001…
…011011000101111110
31202210021102012221220
4101033201123011332
5300404042442344
612301043534210
71223536444455
oct211741330576
952707365856
1018514030974
11794076254a
12370838a366
131990888c1a
14c78bd5b9c
15735593c19
hex44f85b17e

18514030974 has 16 divisors (see below), whose sum is σ = 37030440720. Its totient is φ = 6170947200.

The previous prime is 18514030973. The next prime is 18514031051. The reversal of 18514030974 is 47903041581.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18514030973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11574 + ... + 192774.

It is an arithmetic number, because the mean of its divisors is an integer number (2314402545).

Almost surely, 218514030974 is an apocalyptic number.

18514030974 is an abundant number, since it is smaller than the sum of its proper divisors (18516409746).

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

18514030974 is a wasteful number, since it uses less digits than its factorization.

18514030974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198235.

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 18514030974 in words is "eighteen billion, five hundred fourteen million, thirty thousand, nine hundred seventy-four".

Divisors: 1 2 3 6 17029 34058 51087 102174 181201 362402 543603 1087206 3085671829 6171343658 9257015487 18514030974