18326318216 has 32 divisors (see below), whose sum is σ = 36258924000. Its totient is φ = 8659633536.

The previous prime is 18326318119. The next prime is 18326318233. The reversal of 18326318216 is 61281362381.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 85226 + ... + 209561.

It is an arithmetic number, because the mean of its divisors is an integer number (1133091375).

Almost surely, 2^18326318216 is an apocalyptic number.

It is an amenable number.

18326318216 is a deficient number, since it is larger than the sum of its proper divisors (17932605784).

18326318216 is a wasteful number, since it uses less digits than its factorization.

18326318216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295221 (or 295217 counting only the distinct ones).

The product of its digits is 82944, while the sum is 41.

The spelling of 18326318216 in words is "eighteen billion, three hundred twenty-six million, three hundred eighteen thousand, two hundred sixteen".