171111138 has 16 divisors (see below), whose sum is σ = 373333536. Its totient is φ = 51851840.

The previous prime is 171111089. The next prime is 171111167. The reversal of 171111138 is 831111171.

171111138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1296231 + ... + 1296362.

It is an arithmetic number, because the mean of its divisors is an integer number (23333346).

Almost surely, 2^171111138 is an apocalyptic number.

171111138 is an abundant number, since it is smaller than the sum of its proper divisors (202222398).

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

171111138 is a wasteful number, since it uses less digits than its factorization.

171111138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2592609.

The product of its digits is 168, while the sum is 24.

The square root of 171111138 is about 13080.9456080209. The cubic root of 171111138 is about 555.1701320799.

The spelling of 171111138 in words is "one hundred seventy-one million, one hundred eleven thousand, one hundred thirty-eight".