194789556913 has 8 divisors (see below), whose sum is σ = 222634180928. Its totient is φ = 166949319024.

The previous prime is 194789556877. The next prime is 194789556947. The reversal of 194789556913 is 319655987491.

It is a happy number.

194789556913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 194789556913 - 2¹⁷ = 194789425841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194789556113) 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 7 ways as a sum of consecutive naturals, for example, 1000806 + ... + 1179487.

It is an arithmetic number, because the mean of its divisors is an integer number (27829272616).

Almost surely, 2^194789556913 is an apocalyptic number.

It is an amenable number.

194789556913 is a deficient number, since it is larger than the sum of its proper divisors (27844624015).

194789556913 is a wasteful number, since it uses less digits than its factorization.

194789556913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2193063.

The product of its digits is 73483200, while the sum is 67.

The spelling of 194789556913 in words is "one hundred ninety-four billion, seven hundred eighty-nine million, five hundred fifty-six thousand, nine hundred thirteen".