168466809 has 32 divisors (see below), whose sum is σ = 265520896. Its totient is φ = 93000960.

The previous prime is 168466801. The next prime is 168466813. The reversal of 168466809 is 908664861.

It is not a de Polignac number, because 168466809 - 2³ = 168466801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168466801) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 121299 + ... + 122679.

It is an arithmetic number, because the mean of its divisors is an integer number (8297528).

Almost surely, 2^168466809 is an apocalyptic number.

It is an amenable number.

168466809 is a deficient number, since it is larger than the sum of its proper divisors (97054087).

168466809 is a wasteful number, since it uses less digits than its factorization.

168466809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1585.

The product of its (nonzero) digits is 497664, while the sum is 48.

The square root of 168466809 is about 12979.4764532318. The cubic root of 168466809 is about 552.2954303630.

The spelling of 168466809 in words is "one hundred sixty-eight million, four hundred sixty-six thousand, eight hundred nine".