18304765972 has 12 divisors (see below), whose sum is σ = 32142671316. Its totient is φ = 9121145600.

The previous prime is 18304765957. The next prime is 18304766023. The reversal of 18304765972 is 27956740381.

It can be written as a sum of positive squares in 2 ways, for example, as 16619335056 + 1685430916 = 128916^2 + 41054^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7808029 + ... + 7810372.

It is an arithmetic number, because the mean of its divisors is an integer number (2678555943).

It is a 1-persistent number, because it is pandigital, but 2⋅18304765972 = 36609531944 is not.

Almost surely, 2^18304765972 is an apocalyptic number.

It is an amenable number.

18304765972 is a deficient number, since it is larger than the sum of its proper divisors (13837905344).

18304765972 is a wasteful number, since it uses less digits than its factorization.

18304765972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15618698 (or 15618696 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 52.

The spelling of 18304765972 in words is "eighteen billion, three hundred four million, seven hundred sixty-five thousand, nine hundred seventy-two".