138475759 has 2 divisors, whose sum is σ = 138475760. Its totient is φ = 138475758.

The previous prime is 138475751. The next prime is 138475849. The reversal of 138475759 is 957574831.

It is a happy number.

138475759 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 is a cyclic number.

It is not a de Polignac number, because 138475759 - 2³ = 138475751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138475751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69237879 + 69237880.

It is an arithmetic number, because the mean of its divisors is an integer number (69237880).

Almost surely, 2^138475759 is an apocalyptic number.

138475759 is a deficient number, since it is larger than the sum of its proper divisors (1).

138475759 is an equidigital number, since it uses as much as digits as its factorization.

138475759 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1058400, while the sum is 49.

The square root of 138475759 is about 11767.5723494695. The cubic root of 138475759 is about 517.3580981169.

The spelling of 138475759 in words is "one hundred thirty-eight million, four hundred seventy-five thousand, seven hundred fifty-nine".