18437423164 has 12 divisors (see below), whose sum is σ = 32340355488. Its totient is φ = 9197321600.

The previous prime is 18437423159. The next prime is 18437423183. The reversal of 18437423164 is 46132473481.

It is a self number, because there is not a number n which added to its sum of digits gives 18437423164.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5345557 + ... + 5349004.

It is an arithmetic number, because the mean of its divisors is an integer number (2695029624).

Almost surely, 2^18437423164 is an apocalyptic number.

It is an amenable number.

18437423164 is a deficient number, since it is larger than the sum of its proper divisors (13902932324).

18437423164 is a wasteful number, since it uses less digits than its factorization.

18437423164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10694996 (or 10694994 counting only the distinct ones).

The product of its digits is 387072, while the sum is 43.

The spelling of 18437423164 in words is "eighteen billion, four hundred thirty-seven million, four hundred twenty-three thousand, one hundred sixty-four".