194642193 has 8 divisors (see below), whose sum is σ = 260141056. Its totient is φ = 129452400.

The previous prime is 194642183. The next prime is 194642207. The reversal of 194642193 is 391246491.

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

It is not a de Polignac number, because 194642193 - 2⁴ = 194642177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (194642143) 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, 75793 + ... + 78318.

It is an arithmetic number, because the mean of its divisors is an integer number (32517632).

Almost surely, 2^194642193 is an apocalyptic number.

It is an amenable number.

194642193 is a deficient number, since it is larger than the sum of its proper divisors (65498863).

194642193 is a wasteful number, since it uses less digits than its factorization.

194642193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154535.

The product of its digits is 46656, while the sum is 39.

The square root of 194642193 is about 13951.4226156331. The cubic root of 194642193 is about 579.5341016791.

The spelling of 194642193 in words is "one hundred ninety-four million, six hundred forty-two thousand, one hundred ninety-three".