18396938200 has 24 divisors (see below), whose sum is σ = 42772881780. Its totient is φ = 7358775200.

The previous prime is 18396938179. The next prime is 18396938207. The reversal of 18396938200 is 283969381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18396938207) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45992146 + ... + 45992545.

Almost surely, 2^18396938200 is an apocalyptic number.

18396938200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18396938200 is an abundant number, since it is smaller than the sum of its proper divisors (24375943580).

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

18396938200 is a wasteful number, since it uses less digits than its factorization.

18396938200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91984707 (or 91984698 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 49.

The spelling of 18396938200 in words is "eighteen billion, three hundred ninety-six million, nine hundred thirty-eight thousand, two hundred".