1563381073 has 2 divisors, whose sum is σ = 1563381074. Its totient is φ = 1563381072.

The previous prime is 1563380993. The next prime is 1563381077. The reversal of 1563381073 is 3701833651.

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., 1521546049 + 41835024 = 39007^2 + 6468^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1563381073 is a prime.

It is not a weakly prime, because it can be changed into another prime (1563381077) 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, 781690536 + 781690537.

It is an arithmetic number, because the mean of its divisors is an integer number (781690537).

Almost surely, 2^1563381073 is an apocalyptic number.

It is an amenable number.

1563381073 is a deficient number, since it is larger than the sum of its proper divisors (1).

1563381073 is an equidigital number, since it uses as much as digits as its factorization.

1563381073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 1563381073 is about 39539.6139713073. The cubic root of 1563381073 is about 1160.6152782780.

The spelling of 1563381073 in words is "one billion, five hundred sixty-three million, three hundred eighty-one thousand, seventy-three".