18229980928 has 36 divisors (see below), whose sum is σ = 37643550840. Its totient is φ = 8800676864.

The previous prime is 18229980887. The next prime is 18229980953. The reversal of 18229980928 is 82908992281.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1220350 + ... + 1235197.

It is an arithmetic number, because the mean of its divisors is an integer number (1045654190).

Almost surely, 2^18229980928 is an apocalyptic number.

It is an amenable number.

18229980928 is an abundant number, since it is smaller than the sum of its proper divisors (19413569912).

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

18229980928 is an equidigital number, since it uses as much as digits as its factorization.

18229980928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2455592 (or 2455578 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 58.

The spelling of 18229980928 in words is "eighteen billion, two hundred twenty-nine million, nine hundred eighty thousand, nine hundred twenty-eight".