18023898830 has 160 divisors (see below), whose sum is σ = 39132434880. Its totient is φ = 5974456320.

The previous prime is 18023898829. The next prime is 18023898863. The reversal of 18023898830 is 3889832081.

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 79 ways as a sum of consecutive naturals, for example, 165356816 + ... + 165356924.

It is an arithmetic number, because the mean of its divisors is an integer number (244577718).

Almost surely, 2^18023898830 is an apocalyptic number.

18023898830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18023898830 is an abundant number, since it is smaller than the sum of its proper divisors (21108536050).

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

18023898830 is an equidigital number, since it uses as much as digits as its factorization.

18023898830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312 (or 291 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 50.

The spelling of 18023898830 in words is "eighteen billion, twenty-three million, eight hundred ninety-eight thousand, eight hundred thirty".