138204844 has 6 divisors (see below), whose sum is σ = 241858484. Its totient is φ = 69102420.

The previous prime is 138204817. The next prime is 138204887. The reversal of 138204844 is 448402831.

It is a happy number.

138204844 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17275602 + ... + 17275609.

Almost surely, 2^138204844 is an apocalyptic number.

It is an amenable number.

138204844 is a deficient number, since it is larger than the sum of its proper divisors (103653640).

138204844 is a wasteful number, since it uses less digits than its factorization.

138204844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34551215 (or 34551213 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 34.

The square root of 138204844 is about 11756.0556310354. The cubic root of 138204844 is about 517.0204901172.

The spelling of 138204844 in words is "one hundred thirty-eight million, two hundred four thousand, eight hundred forty-four".