196643173 has 4 divisors (see below), whose sum is σ = 196672320. Its totient is φ = 196614028.

The previous prime is 196643149. The next prime is 196643177. The reversal of 196643173 is 371346691.

196643173 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 371346691 = 17 ⋅21843923.

It is a cyclic number.

It is not a de Polignac number, because 196643173 - 2⁹ = 196642661 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196643177) 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, 1338 + ... + 19876.

It is an arithmetic number, because the mean of its divisors is an integer number (49168080).

Almost surely, 2^196643173 is an apocalyptic number.

It is an amenable number.

196643173 is a deficient number, since it is larger than the sum of its proper divisors (29147).

196643173 is a wasteful number, since it uses less digits than its factorization.

196643173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29146.

The product of its digits is 81648, while the sum is 40.

The square root of 196643173 is about 14022.9516507760. The cubic root of 196643173 is about 581.5132629765.

The spelling of 196643173 in words is "one hundred ninety-six million, six hundred forty-three thousand, one hundred seventy-three".