138588757 has 2 divisors, whose sum is σ = 138588758. Its totient is φ = 138588756.

The previous prime is 138588727. The next prime is 138588803. The reversal of 138588757 is 757885831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117483921 + 21104836 = 10839^2 + 4594^2 .

It is a cyclic number.

It is not a de Polignac number, because 138588757 - 2²³ = 130200149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138588727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69294378 + 69294379.

It is an arithmetic number, because the mean of its divisors is an integer number (69294379).

Almost surely, 2^138588757 is an apocalyptic number.

It is an amenable number.

138588757 is a deficient number, since it is larger than the sum of its proper divisors (1).

138588757 is an equidigital number, since it uses as much as digits as its factorization.

138588757 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1881600, while the sum is 52.

The square root of 138588757 is about 11772.3726155775. The cubic root of 138588757 is about 517.4987834771.

The spelling of 138588757 in words is "one hundred thirty-eight million, five hundred eighty-eight thousand, seven hundred fifty-seven".