138372265 has 16 divisors (see below), whose sum is σ = 176184720. Its totient is φ = 103966720.

The previous prime is 138372257. The next prime is 138372317. The reversal of 138372265 is 562273831.

138372265 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 826281 + 137545984 = 909^2 + 11728^2 .

It is not a de Polignac number, because 138372265 - 2³ = 138372257 is a prime.

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, 46935 + ... + 49795.

It is an arithmetic number, because the mean of its divisors is an integer number (11011545).

Almost surely, 2^138372265 is an apocalyptic number.

It is an amenable number.

138372265 is a deficient number, since it is larger than the sum of its proper divisors (37812455).

138372265 is a wasteful number, since it uses less digits than its factorization.

138372265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3452.

The product of its digits is 60480, while the sum is 37.

The square root of 138372265 is about 11763.1741039568. The cubic root of 138372265 is about 517.2291783117.

The spelling of 138372265 in words is "one hundred thirty-eight million, three hundred seventy-two thousand, two hundred sixty-five".