18225929228 has 48 divisors (see below), whose sum is σ = 36401791104. Its totient is φ = 7910092800.

The previous prime is 18225929191. The next prime is 18225929233. The reversal of 18225929228 is 82292952281.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1053101 + ... + 1070267.

It is an arithmetic number, because the mean of its divisors is an integer number (758370648).

Almost surely, 2^18225929228 is an apocalyptic number.

It is an amenable number.

18225929228 is a deficient number, since it is larger than the sum of its proper divisors (18175861876).

18225929228 is a wasteful number, since it uses less digits than its factorization.

18225929228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18402 (or 18400 counting only the distinct ones).

The product of its digits is 829440, while the sum is 50.

The spelling of 18225929228 in words is "eighteen billion, two hundred twenty-five million, nine hundred twenty-nine thousand, two hundred twenty-eight".