18219602196 has 36 divisors (see below), whose sum is σ = 46261651072. Its totient is φ = 6045963984.

The previous prime is 18219602171. The next prime is 18219602207. The reversal of 18219602196 is 69120691281.

18219602196 is a `hidden beast` number, since 1 + 8 + 21 + 9 + 602 + 19 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1126726 + ... + 1142781.

Almost surely, 2^18219602196 is an apocalyptic number.

It is an amenable number.

18219602196 is an abundant number, since it is smaller than the sum of its proper divisors (28042048876).

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

18219602196 is a wasteful number, since it uses less digits than its factorization.

18219602196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2269740 (or 2269735 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The spelling of 18219602196 in words is "eighteen billion, two hundred nineteen million, six hundred two thousand, one hundred ninety-six".