138268179 has 24 divisors (see below), whose sum is σ = 228669792. Its totient is φ = 78865920.

The previous prime is 138268159. The next prime is 138268181. The reversal of 138268179 is 971862831.

138268179 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 138268179 - 2²³ = 129879571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138268159) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39459 + ... + 42819.

It is an arithmetic number, because the mean of its divisors is an integer number (9527908).

Almost surely, 2^138268179 is an apocalyptic number.

138268179 is a deficient number, since it is larger than the sum of its proper divisors (90401613).

138268179 is a wasteful number, since it uses less digits than its factorization.

138268179 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4027 (or 4024 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 138268179 is about 11758.7490406080. The cubic root of 138268179 is about 517.0994562156.

The spelling of 138268179 in words is "one hundred thirty-eight million, two hundred sixty-eight thousand, one hundred seventy-nine".