18188002196 has 48 divisors (see below), whose sum is σ = 39190341120. Its totient is φ = 7192281600.

The previous prime is 18188002139. The next prime is 18188002213. The reversal of 18188002196 is 69120088181.

It is a congruent number.

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, 1010645 + ... + 1028483.

It is an arithmetic number, because the mean of its divisors is an integer number (816465440).

Almost surely, 2^18188002196 is an apocalyptic number.

It is an amenable number.

18188002196 is an abundant number, since it is smaller than the sum of its proper divisors (21002338924).

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

18188002196 is a wasteful number, since it uses less digits than its factorization.

18188002196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20664 (or 20662 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 44.

The spelling of 18188002196 in words is "eighteen billion, one hundred eighty-eight million, two thousand, one hundred ninety-six".