138355607 has 16 divisors (see below), whose sum is σ = 157913280. Its totient is φ = 120288000.

The previous prime is 138355583. The next prime is 138355619. The reversal of 138355607 is 706553831.

It is a cyclic number.

It is not a de Polignac number, because 138355607 - 2¹⁰ = 138354583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138355627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10982 + ... + 19932.

It is an arithmetic number, because the mean of its divisors is an integer number (9869580).

Almost surely, 2^138355607 is an apocalyptic number.

138355607 is a deficient number, since it is larger than the sum of its proper divisors (19557673).

138355607 is a wasteful number, since it uses less digits than its factorization.

138355607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9034.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 138355607 is about 11762.4660254557. The cubic root of 138355607 is about 517.2084218655.

The spelling of 138355607 in words is "one hundred thirty-eight million, three hundred fifty-five thousand, six hundred seven".