319361849 has 2 divisors, whose sum is σ = 319361850. Its totient is φ = 319361848.

The previous prime is 319361807. The next prime is 319361863. The reversal of 319361849 is 948163913.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205406224 + 113955625 = 14332^2 + 10675^2 .

It is an emirp because it is prime and its reverse (948163913) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 319361849 - 2⁸ = 319361593 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (319361879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159680924 + 159680925.

It is an arithmetic number, because the mean of its divisors is an integer number (159680925).

Almost surely, 2^319361849 is an apocalyptic number.

It is an amenable number.

319361849 is a deficient number, since it is larger than the sum of its proper divisors (1).

319361849 is an equidigital number, since it uses as much as digits as its factorization.

319361849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 44.

The square root of 319361849 is about 17870.6980557560. The cubic root of 319361849 is about 683.5353999018.

The spelling of 319361849 in words is "three hundred nineteen million, three hundred sixty-one thousand, eight hundred forty-nine".