18931327030 has 64 divisors (see below), whose sum is σ = 42882089472. Its totient is φ = 5845501440.

The previous prime is 18931327001. The next prime is 18931327033. The reversal of 18931327030 is 3072313981.

18931327030 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18931327033) 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 31 ways as a sum of consecutive naturals, for example, 32499 + ... + 197278.

It is an arithmetic number, because the mean of its divisors is an integer number (670032648).

Almost surely, 2^18931327030 is an apocalyptic number.

18931327030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18931327030 is an abundant number, since it is smaller than the sum of its proper divisors (23950762442).

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

18931327030 is a wasteful number, since it uses less digits than its factorization.

18931327030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229909.

The product of its (nonzero) digits is 27216, while the sum is 37.

The spelling of 18931327030 in words is "eighteen billion, nine hundred thirty-one million, three hundred twenty-seven thousand, thirty".