138548723 has 2 divisors, whose sum is σ = 138548724. Its totient is φ = 138548722.

The previous prime is 138548713. The next prime is 138548743. The reversal of 138548723 is 327845831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138548723 - 2⁶ = 138548659 is a prime.

It is not a weakly prime, because it can be changed into another prime (138548713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69274361 + 69274362.

It is an arithmetic number, because the mean of its divisors is an integer number (69274362).

Almost surely, 2^138548723 is an apocalyptic number.

138548723 is a deficient number, since it is larger than the sum of its proper divisors (1).

138548723 is an equidigital number, since it uses as much as digits as its factorization.

138548723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 41.

The square root of 138548723 is about 11770.6721558287. The cubic root of 138548723 is about 517.4489488875.

The spelling of 138548723 in words is "one hundred thirty-eight million, five hundred forty-eight thousand, seven hundred twenty-three".