18510020430 has 32 divisors (see below), whose sum is σ = 48462599808. Its totient is φ = 4487277600.

The previous prime is 18510020411. The next prime is 18510020447. The reversal of 18510020430 is 3402001581.

It is a self number, because there is not a number n which added to its sum of digits gives 18510020430.

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 15 ways as a sum of consecutive naturals, for example, 28045156 + ... + 28045815.

It is an arithmetic number, because the mean of its divisors is an integer number (1514456244).

Almost surely, 2^18510020430 is an apocalyptic number.

18510020430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18510020430 is an abundant number, since it is smaller than the sum of its proper divisors (29952579378).

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

18510020430 is a wasteful number, since it uses less digits than its factorization.

18510020430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56090992.

The product of its (nonzero) digits is 960, while the sum is 24.

The spelling of 18510020430 in words is "eighteen billion, five hundred ten million, twenty thousand, four hundred thirty".