168536133 has 20 divisors (see below), whose sum is σ = 252160128. Its totient is φ = 112180680.

The previous prime is 168536129. The next prime is 168536141. The reversal of 168536133 is 331635861.

It is a happy number.

It is not a de Polignac number, because 168536133 - 2² = 168536129 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168536153) 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 in 19 ways as a sum of consecutive naturals, for example, 68698 + ... + 71108.

Almost surely, 2^168536133 is an apocalyptic number.

It is an amenable number.

168536133 is a deficient number, since it is larger than the sum of its proper divisors (83623995).

168536133 is an equidigital number, since it uses as much as digits as its factorization.

168536133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3286 (or 3277 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 168536133 is about 12982.1467022985. The cubic root of 168536133 is about 552.3711763969.

The spelling of 168536133 in words is "one hundred sixty-eight million, five hundred thirty-six thousand, one hundred thirty-three".