138273759 has 24 divisors (see below), whose sum is σ = 215560800. Its totient is φ = 84906432.

The previous prime is 138273749. The next prime is 138273761. The reversal of 138273759 is 957372831.

It is a happy number.

It is not a de Polignac number, because 138273759 - 2⁴ = 138273743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138273719) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69097 + ... + 71069.

It is an arithmetic number, because the mean of its divisors is an integer number (8981700).

Almost surely, 2^138273759 is an apocalyptic number.

138273759 is a deficient number, since it is larger than the sum of its proper divisors (77287041).

138273759 is a wasteful number, since it uses less digits than its factorization.

138273759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2591 (or 2588 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 138273759 is about 11758.9863083516. The cubic root of 138273759 is about 517.1064122055.

The spelling of 138273759 in words is "one hundred thirty-eight million, two hundred seventy-three thousand, seven hundred fifty-nine".