138748271 has 16 divisors (see below), whose sum is σ = 150232320. Its totient is φ = 127666560.

The previous prime is 138748243. The next prime is 138748273. The reversal of 138748271 is 172847831.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138748271 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 (138748273) 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, 167360 + ... + 168186.

It is an arithmetic number, because the mean of its divisors is an integer number (9389520).

Almost surely, 2^138748271 is an apocalyptic number.

138748271 is a deficient number, since it is larger than the sum of its proper divisors (11484049).

138748271 is a wasteful number, since it uses less digits than its factorization.

138748271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054.

The product of its digits is 75264, while the sum is 41.

The square root of 138748271 is about 11779.1455971985. The cubic root of 138748271 is about 517.6972523194.

The spelling of 138748271 in words is "one hundred thirty-eight million, seven hundred forty-eight thousand, two hundred seventy-one".