138371171 has 4 divisors (see below), whose sum is σ = 138768000. Its totient is φ = 137974344.

The previous prime is 138371161. The next prime is 138371183. The reversal of 138371171 is 171173831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 138371171 - 2²⁶ = 71262307 is a prime.

It is a super-2 number, since 2×138371171² = 38293161927822482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138371131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197891 + ... + 198588.

It is an arithmetic number, because the mean of its divisors is an integer number (34692000).

Almost surely, 2^138371171 is an apocalyptic number.

138371171 is a deficient number, since it is larger than the sum of its proper divisors (396829).

138371171 is an equidigital number, since it uses as much as digits as its factorization.

138371171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396828.

The product of its digits is 3528, while the sum is 32.

The square root of 138371171 is about 11763.1276028104. The cubic root of 138371171 is about 517.2278152008.

The spelling of 138371171 in words is "one hundred thirty-eight million, three hundred seventy-one thousand, one hundred seventy-one".