168133663 has 2 divisors, whose sum is σ = 168133664. Its totient is φ = 168133662.

The previous prime is 168133643. The next prime is 168133709. The reversal of 168133663 is 366331861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 168133663 - 2⁵ = 168133631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168133613) by changing a digit.

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 as a sum of consecutive naturals, namely, 84066831 + 84066832.

It is an arithmetic number, because the mean of its divisors is an integer number (84066832).

Almost surely, 2^168133663 is an apocalyptic number.

168133663 is a deficient number, since it is larger than the sum of its proper divisors (1).

168133663 is an equidigital number, since it uses as much as digits as its factorization.

168133663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 37.

The square root of 168133663 is about 12966.6365338125. The cubic root of 168133663 is about 551.9311322314.

It can be divided in two parts, 1681 and 33663, that added together give a square (35344 = 188²).

The spelling of 168133663 in words is "one hundred sixty-eight million, one hundred thirty-three thousand, six hundred sixty-three".