138388017 has 8 divisors (see below), whose sum is σ = 187116480. Its totient is φ = 90959120.

The previous prime is 138387979. The next prime is 138388043. The reversal of 138388017 is 710883831.

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 138388017 - 2¹¹ = 138385969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138388067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324642 + ... + 325067.

It is an arithmetic number, because the mean of its divisors is an integer number (23389560).

Almost surely, 2^138388017 is an apocalyptic number.

It is an amenable number.

138388017 is a deficient number, since it is larger than the sum of its proper divisors (48728463).

138388017 is an equidigital number, since it uses as much as digits as its factorization.

138388017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649783.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 138388017 is about 11763.8436320788. The cubic root of 138388017 is about 517.2488043181.

The spelling of 138388017 in words is "one hundred thirty-eight million, three hundred eighty-eight thousand, seventeen".