166133633 has 4 divisors (see below), whose sum is σ = 166183728. Its totient is φ = 166083540.

The previous prime is 166133629. The next prime is 166133647. The reversal of 166133633 is 336331661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 166133633 - 2² = 166133629 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 166133633.

It is not an unprimeable number, because it can be changed into a prime (166133833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19691 + ... + 26832.

It is an arithmetic number, because the mean of its divisors is an integer number (41545932).

Almost surely, 2^166133633 is an apocalyptic number.

It is an amenable number.

166133633 is a deficient number, since it is larger than the sum of its proper divisors (50095).

166133633 is an equidigital number, since it uses as much as digits as its factorization.

166133633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50094.

The product of its digits is 17496, while the sum is 32.

The square root of 166133633 is about 12889.2836496060. The cubic root of 166133633 is about 549.7339021328.

The spelling of 166133633 in words is "one hundred sixty-six million, one hundred thirty-three thousand, six hundred thirty-three".