194705584139 has 12 divisors (see below), whose sum is σ = 215648950440. Its totient is φ = 175653878400.

The previous prime is 194705584127. The next prime is 194705584181. The reversal of 194705584139 is 931485507491.

It is a happy number.

194705584139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 194705584139 - 2²⁸ = 194437148683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (194705584939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6125894 + ... + 6157595.

It is an arithmetic number, because the mean of its divisors is an integer number (17970745870).

Almost surely, 2^194705584139 is an apocalyptic number.

194705584139 is a deficient number, since it is larger than the sum of its proper divisors (20943366301).

194705584139 is a wasteful number, since it uses less digits than its factorization.

194705584139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12283642 (or 12283631 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 56.

The spelling of 194705584139 in words is "one hundred ninety-four billion, seven hundred five million, five hundred eighty-four thousand, one hundred thirty-nine".