18664842234 has 16 divisors (see below), whose sum is σ = 37331173440. Its totient is φ = 6221365920.

The previous prime is 18664842233. The next prime is 18664842239. The reversal of 18664842234 is 43224846681.

It is a super-2 number, since 2×18664842234² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18664842233) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 164622 + ... + 253830.

It is an arithmetic number, because the mean of its divisors is an integer number (2333198340).

Almost surely, 2^18664842234 is an apocalyptic number.

18664842234 is an abundant number, since it is smaller than the sum of its proper divisors (18666331206).

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

18664842234 is a wasteful number, since it uses less digits than its factorization.

18664842234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124085.

The product of its digits is 1769472, while the sum is 48.

The spelling of 18664842234 in words is "eighteen billion, six hundred sixty-four million, eight hundred forty-two thousand, two hundred thirty-four".