138328632594 has 12 divisors (see below), whose sum is σ = 299712037326. Its totient is φ = 46109544192.

The previous prime is 138328632587. The next prime is 138328632623. The reversal of 138328632594 is 495236823831.

138328632594 is a `hidden beast` number, since 1 + 3 + 8 + 328 + 63 + 259 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 134648633025 + 3679999569 = 366945^2 + 60663^2 .

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 138328632594.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3842461999 + ... + 3842462034.

Almost surely, 2^138328632594 is an apocalyptic number.

138328632594 is an abundant number, since it is smaller than the sum of its proper divisors (161383404732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138328632594 is a wasteful number, since it uses less digits than its factorization.

138328632594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7684924041 (or 7684924038 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 54.

The spelling of 138328632594 in words is "one hundred thirty-eight billion, three hundred twenty-eight million, six hundred thirty-two thousand, five hundred ninety-four".