168133866 has 16 divisors (see below), whose sum is σ = 344469888. Its totient is φ = 54677600.

The previous prime is 168133843. The next prime is 168133879. The reversal of 168133866 is 668331861.

It is a super-2 number, since 2×168133866² = 56537993792211912, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341490 + ... + 341981.

It is an arithmetic number, because the mean of its divisors is an integer number (21529368).

Almost surely, 2^168133866 is an apocalyptic number.

168133866 is an abundant number, since it is smaller than the sum of its proper divisors (176336022).

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

168133866 is a wasteful number, since it uses less digits than its factorization.

168133866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683517.

The product of its digits is 124416, while the sum is 42.

The square root of 168133866 is about 12966.6443615918. The cubic root of 168133866 is about 551.9313543602.

The spelling of 168133866 in words is "one hundred sixty-eight million, one hundred thirty-three thousand, eight hundred sixty-six".