138127573 has 2 divisors, whose sum is σ = 138127574. Its totient is φ = 138127572.

The previous prime is 138127553. The next prime is 138127597. The reversal of 138127573 is 375721831.

138127573 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137874564 + 253009 = 11742^2 + 503^2 .

It is a cyclic number.

It is not a de Polignac number, because 138127573 - 2⁵ = 138127541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138127513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69063786 + 69063787.

It is an arithmetic number, because the mean of its divisors is an integer number (69063787).

Almost surely, 2^138127573 is an apocalyptic number.

It is an amenable number.

138127573 is a deficient number, since it is larger than the sum of its proper divisors (1).

138127573 is an equidigital number, since it uses as much as digits as its factorization.

138127573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35280, while the sum is 37.

The square root of 138127573 is about 11752.7687376209. The cubic root of 138127573 is about 516.9241159309.

The spelling of 138127573 in words is "one hundred thirty-eight million, one hundred twenty-seven thousand, five hundred seventy-three".