18371916144 has 30 divisors (see below), whose sum is σ = 51415849056. Its totient is φ = 6123972000.

The previous prime is 18371916127. The next prime is 18371916161. The reversal of 18371916144 is 44161917381.

18371916144 is a `hidden beast` number, since 18 + 3 + 7 + 19 + 1 + 614 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (18371916127) and next prime (18371916161).

It is a self number, because there is not a number n which added to its sum of digits gives 18371916144.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63791232 + ... + 63791519.

Almost surely, 2^18371916144 is an apocalyptic number.

It is an amenable number.

18371916144 is an abundant number, since it is smaller than the sum of its proper divisors (33043932912).

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

18371916144 is a wasteful number, since it uses less digits than its factorization.

18371916144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127582765 (or 127582756 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The spelling of 18371916144 in words is "eighteen billion, three hundred seventy-one million, nine hundred sixteen thousand, one hundred forty-four".