18450012368 has 10 divisors (see below), whose sum is σ = 35746898994. Its totient is φ = 9225006176.

The previous prime is 18450012353. The next prime is 18450012389. The reversal of 18450012368 is 86321005481.

It can be written as a sum of positive squares in only one way, i.e., 16726766224 + 1723246144 = 129332^2 + 41512^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 576562871 + ... + 576562902.

Almost surely, 2^18450012368 is an apocalyptic number.

It is an amenable number.

18450012368 is a deficient number, since it is larger than the sum of its proper divisors (17296886626).

18450012368 is a wasteful number, since it uses less digits than its factorization.

18450012368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153125781 (or 1153125775 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The spelling of 18450012368 in words is "eighteen billion, four hundred fifty million, twelve thousand, three hundred sixty-eight".