168133601 has 2 divisors, whose sum is σ = 168133602. Its totient is φ = 168133600.

The previous prime is 168133597. The next prime is 168133607. The reversal of 168133601 is 106331861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124902976 + 43230625 = 11176^2 + 6575^2 .

It is a cyclic number.

It is not a de Polignac number, because 168133601 - 2² = 168133597 is a prime.

It is not a weakly prime, because it can be changed into another prime (168133607) 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, 84066800 + 84066801.

It is an arithmetic number, because the mean of its divisors is an integer number (84066801).

Almost surely, 2^168133601 is an apocalyptic number.

It is an amenable number.

168133601 is a deficient number, since it is larger than the sum of its proper divisors (1).

168133601 is an equidigital number, since it uses as much as digits as its factorization.

168133601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 168133601 is about 12966.6341430612. The cubic root of 168133601 is about 551.9310643891.

The spelling of 168133601 in words is "one hundred sixty-eight million, one hundred thirty-three thousand, six hundred one".