209168196 has 12 divisors (see below), whose sum is σ = 488059152. Its totient is φ = 69722728.

The previous prime is 209168161. The next prime is 209168203. The reversal of 209168196 is 691861902.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8715330 + ... + 8715353.

It is an arithmetic number, because the mean of its divisors is an integer number (40671596).

Almost surely, 2^209168196 is an apocalyptic number.

It is an amenable number.

209168196 is an abundant number, since it is smaller than the sum of its proper divisors (278890956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

209168196 is a wasteful number, since it uses less digits than its factorization.

209168196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17430690 (or 17430688 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 42.

The square root of 209168196 is about 14462.6483052033. The cubic root of 209168196 is about 593.6063666454.

The spelling of 209168196 in words is "two hundred nine million, one hundred sixty-eight thousand, one hundred ninety-six".