194489539673 has 8 divisors (see below), whose sum is σ = 228491207616. Its totient is φ = 163208005200.

The previous prime is 194489539613. The next prime is 194489539681. The reversal of 194489539673 is 376935984491.

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 194489539673 - 2²⁴ = 194472762457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194489539613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 680033213 + ... + 680033498.

It is an arithmetic number, because the mean of its divisors is an integer number (28561400952).

Almost surely, 2^194489539673 is an apocalyptic number.

194489539673 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

194489539673 is a deficient number, since it is larger than the sum of its proper divisors (34001667943).

194489539673 is a wasteful number, since it uses less digits than its factorization.

194489539673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360066735.

The product of its digits is 176359680, while the sum is 68.

The spelling of 194489539673 in words is "one hundred ninety-four billion, four hundred eighty-nine million, five hundred thirty-nine thousand, six hundred seventy-three".