1563648323 has 2 divisors, whose sum is σ = 1563648324. Its totient is φ = 1563648322.

The previous prime is 1563648313. The next prime is 1563648329. The reversal of 1563648323 is 3238463651.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1563648323 - 2⁸ = 1563648067 is a prime.

It is not a weakly prime, because it can be changed into another prime (1563648329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 781824161 + 781824162.

It is an arithmetic number, because the mean of its divisors is an integer number (781824162).

Almost surely, 2^1563648323 is an apocalyptic number.

1563648323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1563648323 is an equidigital number, since it uses as much as digits as its factorization.

1563648323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 41.

The square root of 1563648323 is about 39542.9933490119. The cubic root of 1563648323 is about 1160.6814077641.

The spelling of 1563648323 in words is "one billion, five hundred sixty-three million, six hundred forty-eight thousand, three hundred twenty-three".