18232346709 has 12 divisors (see below), whose sum is σ = 26948068576. Its totient is φ = 11872225512.

The previous prime is 18232346701. The next prime is 18232346723. The reversal of 18232346709 is 90764323281.

18232346709 is a `hidden beast` number, since 1 + 8 + 232 + 346 + 70 + 9 = 666.

It is not a de Polignac number, because 18232346709 - 2³ = 18232346701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18232346701) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23555617 + ... + 23556390.

Almost surely, 2^18232346709 is an apocalyptic number.

It is an amenable number.

18232346709 is a deficient number, since it is larger than the sum of its proper divisors (8715721867).

18232346709 is a wasteful number, since it uses less digits than its factorization.

18232346709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47112056 (or 47112053 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The spelling of 18232346709 in words is "eighteen billion, two hundred thirty-two million, three hundred forty-six thousand, seven hundred nine".