138371259 has 16 divisors (see below), whose sum is σ = 205097984. Its totient is φ = 82404000.

The previous prime is 138371251. The next prime is 138371263. The reversal of 138371259 is 952173831.

It is not a de Polignac number, because 138371259 - 2³ = 138371251 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (138371251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56017 + ... + 58434.

It is an arithmetic number, because the mean of its divisors is an integer number (12818624).

Almost surely, 2^138371259 is an apocalyptic number.

138371259 is a deficient number, since it is larger than the sum of its proper divisors (66726725).

138371259 is a wasteful number, since it uses less digits than its factorization.

138371259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114498.

The product of its digits is 45360, while the sum is 39.

The square root of 138371259 is about 11763.1313433116. The cubic root of 138371259 is about 517.2279248480.

The spelling of 138371259 in words is "one hundred thirty-eight million, three hundred seventy-one thousand, two hundred fifty-nine".