18200040204 has 12 divisors (see below), whose sum is σ = 42466760504. Its totient is φ = 6066680064.

The previous prime is 18200040167. The next prime is 18200040247. The reversal of 18200040204 is 40204000281.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 758334997 + ... + 758335020.

Almost surely, 2^18200040204 is an apocalyptic number.

It is an amenable number.

18200040204 is an abundant number, since it is smaller than the sum of its proper divisors (24266720300).

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

18200040204 is a wasteful number, since it uses less digits than its factorization.

18200040204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1516670024 (or 1516670022 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 18200040204 its reverse (40204000281), we get a palindrome (58404040485).

The spelling of 18200040204 in words is "eighteen billion, two hundred million, forty thousand, two hundred four".