18856058430 has 64 divisors (see below), whose sum is σ = 49385500416. Its totient is φ = 4569600000.

The previous prime is 18856058423. The next prime is 18856058471. The reversal of 18856058430 is 3485065881.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18856058430.

It is a congruent number.

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, 1170430 + ... + 1186430.

It is an arithmetic number, because the mean of its divisors is an integer number (771648444).

Almost surely, 2^18856058430 is an apocalyptic number.

18856058430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18856058430 is an abundant number, since it is smaller than the sum of its proper divisors (30529441986).

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

18856058430 is a wasteful number, since it uses less digits than its factorization.

18856058430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19593.

The product of its (nonzero) digits is 921600, while the sum is 48.

The spelling of 18856058430 in words is "eighteen billion, eight hundred fifty-six million, fifty-eight thousand, four hundred thirty".