166363133 has 2 divisors, whose sum is σ = 166363134. Its totient is φ = 166363132.

The previous prime is 166363121. The next prime is 166363157. The reversal of 166363133 is 331363661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129663769 + 36699364 = 11387^2 + 6058^2 .

It is a cyclic number.

It is not a de Polignac number, because 166363133 - 2⁸ = 166362877 is a prime.

It is a Sophie Germain prime.

It is a Chen 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 166363133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166363733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83181566 + 83181567.

It is an arithmetic number, because the mean of its divisors is an integer number (83181567).

Almost surely, 2^166363133 is an apocalyptic number.

It is an amenable number.

166363133 is a deficient number, since it is larger than the sum of its proper divisors (1).

166363133 is an equidigital number, since it uses as much as digits as its factorization.

166363133 is an odious number, because the sum of its binary digits is odd.

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

The square root of 166363133 is about 12898.1833216930. The cubic root of 166363133 is about 549.9869231051.

The spelling of 166363133 in words is "one hundred sixty-six million, three hundred sixty-three thousand, one hundred thirty-three".