1319949493 has 2 divisors, whose sum is σ = 1319949494. Its totient is φ = 1319949492.

The previous prime is 1319949473. The next prime is 1319949503. The reversal of 1319949493 is 3949499131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1138185169 + 181764324 = 33737^2 + 13482^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1319949493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1319949493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1319949443) 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, 659974746 + 659974747.

It is an arithmetic number, because the mean of its divisors is an integer number (659974747).

Almost surely, 2^1319949493 is an apocalyptic number.

It is an amenable number.

1319949493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1319949493 is an equidigital number, since it uses as much as digits as its factorization.

1319949493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 944784, while the sum is 52.

The square root of 1319949493 is about 36331.1091628098. The cubic root of 1319949493 is about 1096.9473193422.

The spelling of 1319949493 in words is "one billion, three hundred nineteen million, nine hundred forty-nine thousand, four hundred ninety-three".