209468168 has 32 divisors (see below), whose sum is σ = 483389760. Its totient is φ = 82866240.

The previous prime is 209468159. The next prime is 209468183. The reversal of 209468168 is 861864902.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143138 + ... + 144593.

It is an arithmetic number, because the mean of its divisors is an integer number (15105930).

Almost surely, 2^209468168 is an apocalyptic number.

209468168 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

209468168 is an abundant number, since it is smaller than the sum of its proper divisors (273921592).

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

209468168 is a wasteful number, since it uses less digits than its factorization.

209468168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287757 (or 287753 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 209468168 is about 14473.0151661635. The cubic root of 209468168 is about 593.8899984115.

The spelling of 209468168 in words is "two hundred nine million, four hundred sixty-eight thousand, one hundred sixty-eight".