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18514181704 = 2317197164931
BaseRepresentation
bin10001001111100001…
…111111111001001000
31202210021200212201111
4101033201333321020
5300404112303304
612301051100104
71223540643064
oct211741777110
952707625644
1018514181704
117940855817
123708441634
13199090c705
14c78c34aa4
157355c3704
hex44f87fe48

18514181704 has 32 divisors (see below), whose sum is σ = 38690632800. Its totient is φ = 8253999360.

The previous prime is 18514181701. The next prime is 18514181717. The reversal of 18514181704 is 40718141581.

It is not an unprimeable number, because it can be changed into a prime (18514181701) 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, 3579882 + ... + 3585049.

It is an arithmetic number, because the mean of its divisors is an integer number (1209082275).

Almost surely, 218514181704 is an apocalyptic number.

It is an amenable number.

18514181704 is an abundant number, since it is smaller than the sum of its proper divisors (20176451096).

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

18514181704 is a wasteful number, since it uses less digits than its factorization.

18514181704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7164973 (or 7164969 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 40.

The spelling of 18514181704 in words is "eighteen billion, five hundred fourteen million, one hundred eighty-one thousand, seven hundred four".

Divisors: 1 2 4 8 17 19 34 38 68 76 136 152 323 646 1292 2584 7164931 14329862 28659724 57319448 121803827 136133689 243607654 272267378 487215308 544534756 974430616 1089069512 2314272713 4628545426 9257090852 18514181704