319166849 has 2 divisors, whose sum is σ = 319166850. Its totient is φ = 319166848.

The previous prime is 319166843. The next prime is 319166851. The reversal of 319166849 is 948661913.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 233937025 + 85229824 = 15295^2 + 9232^2 .

It is a cyclic number.

It is not a de Polignac number, because 319166849 - 2⁸ = 319166593 is a prime.

Together with 319166851, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (319166843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159583424 + 159583425.

It is an arithmetic number, because the mean of its divisors is an integer number (159583425).

Almost surely, 2^319166849 is an apocalyptic number.

It is an amenable number.

319166849 is a deficient number, since it is larger than the sum of its proper divisors (1).

319166849 is an equidigital number, since it uses as much as digits as its factorization.

319166849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 47.

The square root of 319166849 is about 17865.2413641686. The cubic root of 319166849 is about 683.3962510115.

The spelling of 319166849 in words is "three hundred nineteen million, one hundred sixty-six thousand, eight hundred forty-nine".