18016297228 has 6 divisors (see below), whose sum is σ = 31528520156. Its totient is φ = 9008148612.

The previous prime is 18016297219. The next prime is 18016297307. The reversal of 18016297228 is 82279261081.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2252037150 + ... + 2252037157.

Almost surely, 2^18016297228 is an apocalyptic number.

It is an amenable number.

18016297228 is a deficient number, since it is larger than the sum of its proper divisors (13512222928).

18016297228 is a wasteful number, since it uses less digits than its factorization.

18016297228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4504074311 (or 4504074309 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 46.

The spelling of 18016297228 in words is "eighteen billion, sixteen million, two hundred ninety-seven thousand, two hundred twenty-eight".