18456309316 has 9 divisors (see below), whose sum is σ = 32299016799. Its totient is φ = 9228018804.

The previous prime is 18456309271. The next prime is 18456309329. The reversal of 18456309316 is 61390365481.

The square root of 18456309316 is 135854.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 237745 + ... + 305671.

Almost surely, 2^18456309316 is an apocalyptic number.

18456309316 is the 135854-th square number.

It is an amenable number.

18456309316 is a deficient number, since it is larger than the sum of its proper divisors (13842707483).

18456309316 is an frugal number, since it uses more digits than its factorization.

18456309316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135858 (or 67929 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 46.

The spelling of 18456309316 in words is "eighteen billion, four hundred fifty-six million, three hundred nine thousand, three hundred sixteen".