18732505252 has 12 divisors (see below), whose sum is σ = 33581442636. Its totient is φ = 9137807360.

The previous prime is 18732505247. The next prime is 18732505261. The reversal of 18732505252 is 25250523781.

It can be written as a sum of positive squares in 2 ways, for example, as 5272792996 + 13459712256 = 72614^2 + 116016^2 .

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, 57111133 + ... + 57111460.

It is an arithmetic number, because the mean of its divisors is an integer number (2798453553).

Almost surely, 2^18732505252 is an apocalyptic number.

It is an amenable number.

18732505252 is a deficient number, since it is larger than the sum of its proper divisors (14848937384).

18732505252 is a wasteful number, since it uses less digits than its factorization.

18732505252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114222638 (or 114222636 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 40.

The spelling of 18732505252 in words is "eighteen billion, seven hundred thirty-two million, five hundred five thousand, two hundred fifty-two".