138836271 has 16 divisors (see below), whose sum is σ = 212000000. Its totient is φ = 79170048.

The previous prime is 138836251. The next prime is 138836279. The reversal of 138836271 is 172638831.

138836271 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 138836271 - 2⁵ = 138836239 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 (138836279) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3855 + ... + 17103.

It is an arithmetic number, because the mean of its divisors is an integer number (13250000).

Almost surely, 2^138836271 is an apocalyptic number.

138836271 is a deficient number, since it is larger than the sum of its proper divisors (73163729).

138836271 is a wasteful number, since it uses less digits than its factorization.

138836271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13758.

The product of its digits is 48384, while the sum is 39.

The square root of 138836271 is about 11782.8804203387. The cubic root of 138836271 is about 517.8066776593.

The spelling of 138836271 in words is "one hundred thirty-eight million, eight hundred thirty-six thousand, two hundred seventy-one".