18701958858 has 64 divisors (see below), whose sum is σ = 43617014784. Its totient is φ = 5288624000.

The previous prime is 18701958833. The next prime is 18701958871. The reversal of 18701958858 is 85885910781.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 88008 + ... + 212483.

It is an arithmetic number, because the mean of its divisors is an integer number (681515856).

Almost surely, 2^18701958858 is an apocalyptic number.

18701958858 is an abundant number, since it is smaller than the sum of its proper divisors (24915055926).

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

18701958858 is a wasteful number, since it uses less digits than its factorization.

18701958858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300571.

The product of its (nonzero) digits is 6451200, while the sum is 60.

The spelling of 18701958858 in words is "eighteen billion, seven hundred one million, nine hundred fifty-eight thousand, eight hundred fifty-eight".