18400002204 has 24 divisors (see below), whose sum is σ = 43931789440. Its totient is φ = 5990698224.

The previous prime is 18400002197. The next prime is 18400002217. The reversal of 18400002204 is 40220000481.

It is a super-2 number, since 2×18400002204² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17828944 + ... + 17829975.

Almost surely, 2^18400002204 is an apocalyptic number.

It is an amenable number.

18400002204 is an abundant number, since it is smaller than the sum of its proper divisors (25531787236).

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

18400002204 is a wasteful number, since it uses less digits than its factorization.

18400002204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35658969 (or 35658967 counting only the distinct ones).

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

Adding to 18400002204 its reverse (40220000481), we get a palindrome (58620002685).

The spelling of 18400002204 in words is "eighteen billion, four hundred million, two thousand, two hundred four".