18214312804 has 6 divisors (see below), whose sum is σ = 31875047414. Its totient is φ = 9107156400.

The previous prime is 18214312777. The next prime is 18214312813. The reversal of 18214312804 is 40821341281.

It can be written as a sum of positive squares in only one way, i.e., 17202945600 + 1011367204 = 131160^2 + 31802^2 .

It is a super-2 number, since 2×18214312804² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18214312804.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2276789097 + ... + 2276789104.

Almost surely, 2^18214312804 is an apocalyptic number.

It is an amenable number.

18214312804 is a deficient number, since it is larger than the sum of its proper divisors (13660734610).

18214312804 is a wasteful number, since it uses less digits than its factorization.

18214312804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4553578205 (or 4553578203 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 34.

The spelling of 18214312804 in words is "eighteen billion, two hundred fourteen million, three hundred twelve thousand, eight hundred four".