18045181836 has 48 divisors (see below), whose sum is σ = 51036881280. Its totient is φ = 5468236560.

The previous prime is 18045181769. The next prime is 18045181873. The reversal of 18045181836 is 63818154081.

18045181836 is a `hidden beast` number, since 18 + 0 + 451 + 8 + 183 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 18045181791 and 18045181800.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7593586 + ... + 7595961.

It is an arithmetic number, because the mean of its divisors is an integer number (1063268360).

Almost surely, 2^18045181836 is an apocalyptic number.

It is an amenable number.

18045181836 is an abundant number, since it is smaller than the sum of its proper divisors (32991699444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18045181836 is a wasteful number, since it uses less digits than its factorization.

18045181836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15189571 (or 15189563 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 45.

The spelling of 18045181836 in words is "eighteen billion, forty-five million, one hundred eighty-one thousand, eight hundred thirty-six".