18520033682 has 16 divisors (see below), whose sum is σ = 29419676280. Its totient is φ = 8713678848.

The previous prime is 18520033681. The next prime is 18520033691. The reversal of 18520033682 is 28633002581.

It can be written as a sum of positive squares in 4 ways, for example, as 15306390961 + 3213642721 = 123719^2 + 56689^2 .

It is not an unprimeable number, because it can be changed into a prime (18520033681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144194 + ... + 240482.

Almost surely, 2^18520033682 is an apocalyptic number.

18520033682 is a deficient number, since it is larger than the sum of its proper divisors (10899642598).

18520033682 is a wasteful number, since it uses less digits than its factorization.

18520033682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101965.

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 18520033682 in words is "eighteen billion, five hundred twenty million, thirty-three thousand, six hundred eighty-two".