18880038171 has 40 divisors (see below), whose sum is σ = 29465290800. Its totient is φ = 12032193600.

The previous prime is 18880038169. The next prime is 18880038179. The reversal of 18880038171 is 17183008881.

It is not a de Polignac number, because 18880038171 - 2¹ = 18880038169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18880038179) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 197460 + ... + 277038.

It is an arithmetic number, because the mean of its divisors is an integer number (736632270).

Almost surely, 2^18880038171 is an apocalyptic number.

18880038171 is a deficient number, since it is larger than the sum of its proper divisors (10585252629).

18880038171 is a wasteful number, since it uses less digits than its factorization.

18880038171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79721 (or 79712 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 45.

The spelling of 18880038171 in words is "eighteen billion, eight hundred eighty million, thirty-eight thousand, one hundred seventy-one".