18190604432 has 80 divisors (see below), whose sum is σ = 47321054592. Its totient is φ = 6542069760.

The previous prime is 18190604431. The next prime is 18190604441. The reversal of 18190604432 is 23440609181.

It is not an unprimeable number, because it can be changed into a prime (18190604431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 551873 + ... + 583904.

Almost surely, 2^18190604432 is an apocalyptic number.

It is an amenable number.

18190604432 is an abundant number, since it is smaller than the sum of its proper divisors (29130450160).

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

18190604432 is a wasteful number, since it uses less digits than its factorization.

18190604432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135816 (or 1135810 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The spelling of 18190604432 in words is "eighteen billion, one hundred ninety million, six hundred four thousand, four hundred thirty-two".