18860442258 has 32 divisors (see below), whose sum is σ = 43816302720. Its totient is φ = 5300357760.

The previous prime is 18860442247. The next prime is 18860442259. The reversal of 18860442258 is 85224406881.

It is not an unprimeable number, because it can be changed into a prime (18860442259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3678243 + ... + 3683366.

It is an arithmetic number, because the mean of its divisors is an integer number (1369259460).

Almost surely, 2^18860442258 is an apocalyptic number.

18860442258 is an abundant number, since it is smaller than the sum of its proper divisors (24955860462).

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

18860442258 is a wasteful number, since it uses less digits than its factorization.

18860442258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7361682.

The product of its (nonzero) digits is 983040, while the sum is 48.

The spelling of 18860442258 in words is "eighteen billion, eight hundred sixty million, four hundred forty-two thousand, two hundred fifty-eight".