194385339434 has 32 divisors (see below), whose sum is σ = 343333710720. Its totient is φ = 81374443200.

The previous prime is 194385339413. The next prime is 194385339457. The reversal of 194385339434 is 434933583491.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 194385339434.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 648557 + ... + 899664.

It is an arithmetic number, because the mean of its divisors is an integer number (10729178460).

Almost surely, 2^194385339434 is an apocalyptic number.

194385339434 is a deficient number, since it is larger than the sum of its proper divisors (148948371286).

194385339434 is a wasteful number, since it uses less digits than its factorization.

194385339434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1548686.

The product of its digits is 16796160, while the sum is 56.

The spelling of 194385339434 in words is "one hundred ninety-four billion, three hundred eighty-five million, three hundred thirty-nine thousand, four hundred thirty-four".