18204344202 has 16 divisors (see below), whose sum is σ = 39718569312. Its totient is φ = 5516467920.

The previous prime is 18204344173. The next prime is 18204344251. The reversal of 18204344202 is 20244340281.

It is a self number, because there is not a number n which added to its sum of digits gives 18204344202.

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, 137911633 + ... + 137911764.

It is an arithmetic number, because the mean of its divisors is an integer number (2482410582).

Almost surely, 2^18204344202 is an apocalyptic number.

18204344202 is an abundant number, since it is smaller than the sum of its proper divisors (21514225110).

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

18204344202 is a wasteful number, since it uses less digits than its factorization.

18204344202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275823413.

The product of its (nonzero) digits is 12288, while the sum is 30.

Adding to 18204344202 its reverse (20244340281), we get a palindrome (38448684483).

The spelling of 18204344202 in words is "eighteen billion, two hundred four million, three hundred forty-four thousand, two hundred two".