194149882559 has 4 divisors (see below), whose sum is σ = 205570463904. Its totient is φ = 182729301216.

The previous prime is 194149882541. The next prime is 194149882561. The reversal of 194149882559 is 955288941491.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 194149882559 - 2¹⁶ = 194149817023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 194149882495 and 194149882504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194149882259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5710290647 + ... + 5710290680.

It is an arithmetic number, because the mean of its divisors is an integer number (51392615976).

Almost surely, 2^194149882559 is an apocalyptic number.

194149882559 is a deficient number, since it is larger than the sum of its proper divisors (11420581345).

194149882559 is a wasteful number, since it uses less digits than its factorization.

194149882559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11420581344.

The product of its digits is 37324800, while the sum is 65.

The spelling of 194149882559 in words is "one hundred ninety-four billion, one hundred forty-nine million, eight hundred eighty-two thousand, five hundred fifty-nine".