138798594 has 48 divisors (see below), whose sum is σ = 338667264. Its totient is φ = 40701600.

The previous prime is 138798593. The next prime is 138798601. The reversal of 138798594 is 495897831.

It is a self number, because there is not a number n which added to its sum of digits gives 138798594.

It is not an unprimeable number, because it can be changed into a prime (138798593) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5169 + ... + 17444.

It is an arithmetic number, because the mean of its divisors is an integer number (7055568).

Almost surely, 2^138798594 is an apocalyptic number.

138798594 is an abundant number, since it is smaller than the sum of its proper divisors (199868670).

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

138798594 is a wasteful number, since it uses less digits than its factorization.

138798594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22663 (or 22660 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The square root of 138798594 is about 11781.2815092417. The cubic root of 138798594 is about 517.7598331109.

The spelling of 138798594 in words is "one hundred thirty-eight million, seven hundred ninety-eight thousand, five hundred ninety-four".