138376513 has 4 divisors (see below), whose sum is σ = 150956208. Its totient is φ = 125796820.

The previous prime is 138376501. The next prime is 138376519. The reversal of 138376513 is 315673831.

It is a happy number.

138376513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 138376513 - 2⁹ = 138376001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138376519) 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, 6289831 + ... + 6289852.

It is an arithmetic number, because the mean of its divisors is an integer number (37739052).

Almost surely, 2^138376513 is an apocalyptic number.

It is an amenable number.

138376513 is a deficient number, since it is larger than the sum of its proper divisors (12579695).

138376513 is a wasteful number, since it uses less digits than its factorization.

138376513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12579694.

The product of its digits is 45360, while the sum is 37.

The square root of 138376513 is about 11763.3546660806. The cubic root of 138376513 is about 517.2344712006.

The spelling of 138376513 in words is "one hundred thirty-eight million, three hundred seventy-six thousand, five hundred thirteen".