138366597 has 16 divisors (see below), whose sum is σ = 193098240. Its totient is φ = 87964272.

The previous prime is 138366593. The next prime is 138366601. The reversal of 138366597 is 795663831.

It is a happy number.

138366597 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (138366593) and next prime (138366601).

It is not a de Polignac number, because 138366597 - 2² = 138366593 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138366593) 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, 21054 + ... + 26832.

It is an arithmetic number, because the mean of its divisors is an integer number (12068640).

Almost surely, 2^138366597 is an apocalyptic number.

It is an amenable number.

138366597 is a deficient number, since it is larger than the sum of its proper divisors (54731643).

138366597 is a wasteful number, since it uses less digits than its factorization.

138366597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6152.

The product of its digits is 816480, while the sum is 48.

The square root of 138366597 is about 11762.9331801214. The cubic root of 138366597 is about 517.2221159739. Note that the first 3 decimals are identical.

The spelling of 138366597 in words is "one hundred thirty-eight million, three hundred sixty-six thousand, five hundred ninety-seven".