166033733 has 2 divisors, whose sum is σ = 166033734. Its totient is φ = 166033732.

The previous prime is 166033717. The next prime is 166033753. The reversal of 166033733 is 337330661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149768644 + 16265089 = 12238^2 + 4033^2 .

It is a cyclic number.

It is not a de Polignac number, because 166033733 - 2⁴ = 166033717 is a prime.

It is a Sophie Germain prime.

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 166033733.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166033753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83016866 + 83016867.

It is an arithmetic number, because the mean of its divisors is an integer number (83016867).

Almost surely, 2^166033733 is an apocalyptic number.

It is an amenable number.

166033733 is a deficient number, since it is larger than the sum of its proper divisors (1).

166033733 is an equidigital number, since it uses as much as digits as its factorization.

166033733 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20412, while the sum is 32.

The square root of 166033733 is about 12885.4077545105. The cubic root of 166033733 is about 549.6236907979.

The spelling of 166033733 in words is "one hundred sixty-six million, thirty-three thousand, seven hundred thirty-three".