1319474549 has 2 divisors, whose sum is σ = 1319474550. Its totient is φ = 1319474548.

The previous prime is 1319474543. The next prime is 1319474593. The reversal of 1319474549 is 9454749131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1276990225 + 42484324 = 35735^2 + 6518^2 .

It is an emirp because it is prime and its reverse (9454749131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1319474549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1319474543) 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, 659737274 + 659737275.

It is an arithmetic number, because the mean of its divisors is an integer number (659737275).

Almost surely, 2^1319474549 is an apocalyptic number.

It is an amenable number.

1319474549 is a deficient number, since it is larger than the sum of its proper divisors (1).

1319474549 is an equidigital number, since it uses as much as digits as its factorization.

1319474549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 47.

The square root of 1319474549 is about 36324.5722479976. The cubic root of 1319474549 is about 1096.8157357601.

The spelling of 1319474549 in words is "one billion, three hundred nineteen million, four hundred seventy-four thousand, five hundred forty-nine".