196644191 has 8 divisors (see below), whose sum is σ = 203837568. Its totient is φ = 189504000.

The previous prime is 196644169. The next prime is 196644197. The reversal of 196644191 is 191446691.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-196644191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196644197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5690 + ... + 20631.

It is an arithmetic number, because the mean of its divisors is an integer number (25479696).

Almost surely, 2^196644191 is an apocalyptic number.

196644191 is a deficient number, since it is larger than the sum of its proper divisors (7193377).

196644191 is a wasteful number, since it uses less digits than its factorization.

196644191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26593.

The product of its digits is 46656, while the sum is 41.

The square root of 196644191 is about 14022.9879483654. The cubic root of 196644191 is about 581.5142664514.

The spelling of 196644191 in words is "one hundred ninety-six million, six hundred forty-four thousand, one hundred ninety-one".