138171174 has 32 divisors (see below), whose sum is σ = 280350720. Its totient is φ = 45394272.

The previous prime is 138171139. The next prime is 138171197. The reversal of 138171174 is 471171831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135892 + ... + 136904.

It is an arithmetic number, because the mean of its divisors is an integer number (8760960).

Almost surely, 2^138171174 is an apocalyptic number.

138171174 is an abundant number, since it is smaller than the sum of its proper divisors (142179546).

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

138171174 is a wasteful number, since it uses less digits than its factorization.

138171174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1324.

The product of its digits is 4704, while the sum is 33.

The square root of 138171174 is about 11754.6235158766. The cubic root of 138171174 is about 516.9785005283.

The spelling of 138171174 in words is "one hundred thirty-eight million, one hundred seventy-one thousand, one hundred seventy-four".