2671563449 has 2 divisors, whose sum is σ = 2671563450. Its totient is φ = 2671563448.

The previous prime is 2671563437. The next prime is 2671563451. The reversal of 2671563449 is 9443651762.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2220765625 + 450797824 = 47125^2 + 21232^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2671563449 is a prime.

Together with 2671563451, 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 (2671563409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1335781724 + 1335781725.

It is an arithmetic number, because the mean of its divisors is an integer number (1335781725).

Almost surely, 2^2671563449 is an apocalyptic number.

It is an amenable number.

2671563449 is a deficient number, since it is larger than the sum of its proper divisors (1).

2671563449 is an equidigital number, since it uses as much as digits as its factorization.

2671563449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 47.

The square root of 2671563449 is about 51687.1690944668. The cubic root of 2671563449 is about 1387.5708394858.

The spelling of 2671563449 in words is "two billion, six hundred seventy-one million, five hundred sixty-three thousand, four hundred forty-nine".