138657359 has 2 divisors, whose sum is σ = 138657360. Its totient is φ = 138657358.

The previous prime is 138657353. The next prime is 138657373. The reversal of 138657359 is 953756831.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138657359 is a prime.

It is a super-3 number, since 3×138657359³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138657353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69328679 + 69328680.

It is an arithmetic number, because the mean of its divisors is an integer number (69328680).

Almost surely, 2^138657359 is an apocalyptic number.

138657359 is a deficient number, since it is larger than the sum of its proper divisors (1).

138657359 is an equidigital number, since it uses as much as digits as its factorization.

138657359 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 680400, while the sum is 47.

The square root of 138657359 is about 11775.2859413264. The cubic root of 138657359 is about 517.5841573947.

The spelling of 138657359 in words is "one hundred thirty-eight million, six hundred fifty-seven thousand, three hundred fifty-nine".