138371759 has 2 divisors, whose sum is σ = 138371760. Its totient is φ = 138371758.

The previous prime is 138371641. The next prime is 138371791. The reversal of 138371759 is 957173831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 138371759 - 2⁸ = 138371503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138371459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69185879 + 69185880.

It is an arithmetic number, because the mean of its divisors is an integer number (69185880).

Almost surely, 2^138371759 is an apocalyptic number.

138371759 is a deficient number, since it is larger than the sum of its proper divisors (1).

138371759 is an equidigital number, since it uses as much as digits as its factorization.

138371759 is an evil number, because the sum of its binary digits is even.

The product of its digits is 158760, while the sum is 44.

The square root of 138371759 is about 11763.1525961368. The cubic root of 138371759 is about 517.2285478427.

The spelling of 138371759 in words is "one hundred thirty-eight million, three hundred seventy-one thousand, seven hundred fifty-nine".