18381042176 has 40 divisors (see below), whose sum is σ = 41972789760. Its totient is φ = 7877587968.

The previous prime is 18381042161. The next prime is 18381042191. The reversal of 18381042176 is 67124018381.

It is an interprime number because it is at equal distance from previous prime (18381042161) and next prime (18381042191).

It is a super-2 number, since 2×18381042176² (a number of 21 digits) contains 22 as substring.

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, 2560736 + ... + 2567903.

It is an arithmetic number, because the mean of its divisors is an integer number (1049319744).

Almost surely, 2^18381042176 is an apocalyptic number.

18381042176 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18381042176 is an abundant number, since it is smaller than the sum of its proper divisors (23591747584).

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

18381042176 is an frugal number, since it uses more digits than its factorization.

18381042176 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5128664 (or 5128648 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 41.

The spelling of 18381042176 in words is "eighteen billion, three hundred eighty-one million, forty-two thousand, one hundred seventy-six".