138380759 has 4 divisors (see below), whose sum is σ = 150960840. Its totient is φ = 125800680.

The previous prime is 138380729. The next prime is 138380843. The reversal of 138380759 is 957083831.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 957083831 = 11 ⋅87007621.

It is a cyclic number.

It is not a de Polignac number, because 138380759 - 2¹² = 138376663 is a prime.

It is a super-2 number, since 2×138380759² = 38298468922832162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138380729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6290024 + ... + 6290045.

It is an arithmetic number, because the mean of its divisors is an integer number (37740210).

Almost surely, 2^138380759 is an apocalyptic number.

138380759 is a deficient number, since it is larger than the sum of its proper divisors (12580081).

138380759 is a wasteful number, since it uses less digits than its factorization.

138380759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12580080.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 138380759 is about 11763.5351404244. The cubic root of 138380759 is about 517.2397614892.

The spelling of 138380759 in words is "one hundred thirty-eight million, three hundred eighty thousand, seven hundred fifty-nine".