166898933 has 2 divisors, whose sum is σ = 166898934. Its totient is φ = 166898932.

The previous prime is 166898929. The next prime is 166898939. The reversal of 166898933 is 339898661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145757329 + 21141604 = 12073^2 + 4598^2 .

It is a cyclic number.

It is not a de Polignac number, because 166898933 - 2² = 166898929 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166898939) 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 as a sum of consecutive naturals, namely, 83449466 + 83449467.

It is an arithmetic number, because the mean of its divisors is an integer number (83449467).

Almost surely, 2^166898933 is an apocalyptic number.

It is an amenable number.

166898933 is a deficient number, since it is larger than the sum of its proper divisors (1).

166898933 is an equidigital number, since it uses as much as digits as its factorization.

166898933 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1679616, while the sum is 53.

The square root of 166898933 is about 12918.9369918736. The cubic root of 166898933 is about 550.5767316652.

The spelling of 166898933 in words is "one hundred sixty-six million, eight hundred ninety-eight thousand, nine hundred thirty-three".