18243597752 has 16 divisors (see below), whose sum is σ = 34476092160. Its totient is φ = 9049973184.

The previous prime is 18243597727. The next prime is 18243597761. The reversal of 18243597752 is 25779534281.

It is a junction number, because it is equal to n+sod(n) for n = 18243597694 and 18243597703.

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, 8977133 + ... + 8979164.

It is an arithmetic number, because the mean of its divisors is an integer number (2154755760).

Almost surely, 2^18243597752 is an apocalyptic number.

It is an amenable number.

18243597752 is a deficient number, since it is larger than the sum of its proper divisors (16232494408).

18243597752 is a wasteful number, since it uses less digits than its factorization.

18243597752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17956430 (or 17956426 counting only the distinct ones).

The product of its digits is 4233600, while the sum is 53.

The spelling of 18243597752 in words is "eighteen billion, two hundred forty-three million, five hundred ninety-seven thousand, seven hundred fifty-two".