166935213 has 24 divisors (see below), whose sum is σ = 246781080. Its totient is φ = 108700800.

The previous prime is 166935199. The next prime is 166935227. The reversal of 166935213 is 312539661.

It is an interprime number because it is at equal distance from previous prime (166935199) and next prime (166935227).

It can be written as a sum of positive squares in 4 ways, for example, as 2762244 + 164172969 = 1662^2 + 12813^2 .

It is a de Polignac number, because none of the positive numbers 2^k-166935213 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166935913) 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 23 ways as a sum of consecutive naturals, for example, 127663 + ... + 128963.

It is an arithmetic number, because the mean of its divisors is an integer number (10282545).

Almost surely, 2^166935213 is an apocalyptic number.

It is an amenable number.

166935213 is a deficient number, since it is larger than the sum of its proper divisors (79845867).

166935213 is a wasteful number, since it uses less digits than its factorization.

166935213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1629 (or 1626 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 166935213 is about 12920.3410558700. The cubic root of 166935213 is about 550.6166230259.

The spelling of 166935213 in words is "one hundred sixty-six million, nine hundred thirty-five thousand, two hundred thirteen".