138365167 has 4 divisors (see below), whose sum is σ = 138523816. Its totient is φ = 138206520.

The previous prime is 138365137. The next prime is 138365173. The reversal of 138365167 is 761563831.

It is a happy number.

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 138365167 - 2²³ = 129976559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138365137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78009 + ... + 79762.

It is an arithmetic number, because the mean of its divisors is an integer number (34630954).

Almost surely, 2^138365167 is an apocalyptic number.

138365167 is a deficient number, since it is larger than the sum of its proper divisors (158649).

138365167 is an equidigital number, since it uses as much as digits as its factorization.

138365167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158648.

The product of its digits is 90720, while the sum is 40.

The square root of 138365167 is about 11762.8723958054. The cubic root of 138365167 is about 517.2203341610.

The spelling of 138365167 in words is "one hundred thirty-eight million, three hundred sixty-five thousand, one hundred sixty-seven".