18458202204 has 36 divisors (see below), whose sum is σ = 50247329496. Its totient is φ = 5679446688.

The previous prime is 18458202179. The next prime is 18458202313. The reversal of 18458202204 is 40220285481.

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

It is a Harshad number since it is a multiple of its sum of digits (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, 19719834 + ... + 19720769.

Almost surely, 2^18458202204 is an apocalyptic number.

It is an amenable number.

18458202204 is an abundant number, since it is smaller than the sum of its proper divisors (31789127292).

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

18458202204 is a wasteful number, since it uses less digits than its factorization.

18458202204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39440626 (or 39440621 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 36.

Adding to 18458202204 its reverse (40220285481), we get a palindrome (58678487685).

The spelling of 18458202204 in words is "eighteen billion, four hundred fifty-eight million, two hundred two thousand, two hundred four".