138327659 has 4 divisors (see below), whose sum is σ = 138391680. Its totient is φ = 138263640.

The previous prime is 138327647. The next prime is 138327697. The reversal of 138327659 is 956723831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 956723831 = 7 ⋅136674833.

It is a cyclic number.

It is not a de Polignac number, because 138327659 - 2⁴ = 138327643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138327559) 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, 28652 + ... + 33129.

It is an arithmetic number, because the mean of its divisors is an integer number (34597920).

Almost surely, 2^138327659 is an apocalyptic number.

138327659 is a deficient number, since it is larger than the sum of its proper divisors (64021).

138327659 is an equidigital number, since it uses as much as digits as its factorization.

138327659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64020.

The product of its digits is 272160, while the sum is 44.

The square root of 138327659 is about 11761.2779492706. The cubic root of 138327659 is about 517.1735939446.

The spelling of 138327659 in words is "one hundred thirty-eight million, three hundred twenty-seven thousand, six hundred fifty-nine".