3166985669 has 2 divisors, whose sum is σ = 3166985670. Its totient is φ = 3166985668.

The previous prime is 3166985663. The next prime is 3166985671. The reversal of 3166985669 is 9665896613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2823328225 + 343657444 = 53135^2 + 18538^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3166985669 is a prime.

It is a super-2 number, since 2×3166985669² = 20059596455302755122, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 3166985671, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3166985663) 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, 1583492834 + 1583492835.

It is an arithmetic number, because the mean of its divisors is an integer number (1583492835).

Almost surely, 2^3166985669 is an apocalyptic number.

It is an amenable number.

3166985669 is a deficient number, since it is larger than the sum of its proper divisors (1).

3166985669 is an equidigital number, since it uses as much as digits as its factorization.

3166985669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12597120, while the sum is 59.

The square root of 3166985669 is about 56275.9777258468. The cubic root of 3166985669 is about 1468.5273278028.

The spelling of 3166985669 in words is "three billion, one hundred sixty-six million, nine hundred eighty-five thousand, six hundred sixty-nine".