138596005 has 8 divisors (see below), whose sum is σ = 166378392. Its totient is φ = 110834688.

The previous prime is 138595993. The next prime is 138596011. The reversal of 138596005 is 500695831.

It can be written as a sum of positive squares in 4 ways, for example, as 69739201 + 68856804 = 8351^2 + 8298^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 138596005 - 2¹⁵ = 138563237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23517 + ... + 28813.

It is an arithmetic number, because the mean of its divisors is an integer number (20797299).

Almost surely, 2^138596005 is an apocalyptic number.

It is an amenable number.

138596005 is a deficient number, since it is larger than the sum of its proper divisors (27782387).

138596005 is an equidigital number, since it uses as much as digits as its factorization.

138596005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10535.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 138596005 is about 11772.6804509423. The cubic root of 138596005 is about 517.5078048097.

The spelling of 138596005 in words is "one hundred thirty-eight million, five hundred ninety-six thousand, five".