138316265 has 16 divisors (see below), whose sum is σ = 171941376. Its totient is φ = 106704000.

The previous prime is 138316223. The next prime is 138316271. The reversal of 138316265 is 562613831.

138316265 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 138316265 - 2⁶ = 138316201 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, 47090 + ... + 49940.

It is an arithmetic number, because the mean of its divisors is an integer number (10746336).

Almost surely, 2^138316265 is an apocalyptic number.

It is an amenable number.

138316265 is a deficient number, since it is larger than the sum of its proper divisors (33625111).

138316265 is a wasteful number, since it uses less digits than its factorization.

138316265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3200.

The product of its digits is 25920, while the sum is 35.

The square root of 138316265 is about 11760.7935531579. The cubic root of 138316265 is about 517.1593937532.

The spelling of 138316265 in words is "one hundred thirty-eight million, three hundred sixteen thousand, two hundred sixty-five".