319463869 has 2 divisors, whose sum is σ = 319463870. Its totient is φ = 319463868.

The previous prime is 319463867. The next prime is 319463887. The reversal of 319463869 is 968364913.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 317302969 + 2160900 = 17813^2 + 1470^2 .

It is a cyclic number.

It is not a de Polignac number, because 319463869 - 2¹ = 319463867 is a prime.

It is a super-2 number, since 2×319463869² = 204114327192898322, which contains 22 as substring.

Together with 319463867, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (319463867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159731934 + 159731935.

It is an arithmetic number, because the mean of its divisors is an integer number (159731935).

Almost surely, 2^319463869 is an apocalyptic number.

It is an amenable number.

319463869 is a deficient number, since it is larger than the sum of its proper divisors (1).

319463869 is an equidigital number, since it uses as much as digits as its factorization.

319463869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 839808, while the sum is 49.

The square root of 319463869 is about 17873.5522210891. The cubic root of 319463869 is about 683.6081771789.

The spelling of 319463869 in words is "three hundred nineteen million, four hundred sixty-three thousand, eight hundred sixty-nine".