18240513258 has 32 divisors (see below), whose sum is σ = 39814568640. Its totient is φ = 5525055360.

The previous prime is 18240513233. The next prime is 18240513281. The reversal of 18240513258 is 85231504281.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98748 + ... + 215016.

It is an arithmetic number, because the mean of its divisors is an integer number (1244205270).

Almost surely, 2^18240513258 is an apocalyptic number.

18240513258 is an abundant number, since it is smaller than the sum of its proper divisors (21574055382).

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

18240513258 is a wasteful number, since it uses less digits than its factorization.

18240513258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118662.

The product of its (nonzero) digits is 76800, while the sum is 39.

The spelling of 18240513258 in words is "eighteen billion, two hundred forty million, five hundred thirteen thousand, two hundred fifty-eight".