166851283 has 2 divisors, whose sum is σ = 166851284. Its totient is φ = 166851282.

The previous prime is 166851281. The next prime is 166851299. The reversal of 166851283 is 382158661.

It is a weak prime.

It is an emirp because it is prime and its reverse (382158661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166851283 - 2¹ = 166851281 is a prime.

Together with 166851281, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (166851281) 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, 83425641 + 83425642.

It is an arithmetic number, because the mean of its divisors is an integer number (83425642).

Almost surely, 2^166851283 is an apocalyptic number.

166851283 is a deficient number, since it is larger than the sum of its proper divisors (1).

166851283 is an equidigital number, since it uses as much as digits as its factorization.

166851283 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 40.

The square root of 166851283 is about 12917.0926682439. The cubic root of 166851283 is about 550.5243297356.

The spelling of 166851283 in words is "one hundred sixty-six million, eight hundred fifty-one thousand, two hundred eighty-three".