18442367512 has 8 divisors (see below), whose sum is σ = 34579439100. Its totient is φ = 9221183752.

The previous prime is 18442367509. The next prime is 18442367521. The reversal of 18442367512 is 21576324481.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1152647962 + ... + 1152647977.

Almost surely, 2^18442367512 is an apocalyptic number.

It is an amenable number.

18442367512 is a deficient number, since it is larger than the sum of its proper divisors (16137071588).

18442367512 is a wasteful number, since it uses less digits than its factorization.

18442367512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2305295945 (or 2305295941 counting only the distinct ones).

The product of its digits is 322560, while the sum is 43.

The spelling of 18442367512 in words is "eighteen billion, four hundred forty-two million, three hundred sixty-seven thousand, five hundred twelve".