138068594 has 24 divisors (see below), whose sum is σ = 227615940. Its totient is φ = 62725376.

The previous prime is 138068587. The next prime is 138068597. The reversal of 138068594 is 495860831.

It can be written as a sum of positive squares in 6 ways, for example, as 116100625 + 21967969 = 10775^2 + 4687^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (138068597) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12644 + ... + 20880.

Almost surely, 2^138068594 is an apocalyptic number.

138068594 is a deficient number, since it is larger than the sum of its proper divisors (89547346).

138068594 is a wasteful number, since it uses less digits than its factorization.

138068594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8302 (or 8285 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 138068594 is about 11750.2593162874. The cubic root of 138068594 is about 516.8505317625.

The spelling of 138068594 in words is "one hundred thirty-eight million, sixty-eight thousand, five hundred ninety-four".