945405563 has 2 divisors, whose sum is σ = 945405564. Its totient is φ = 945405562.

The previous prime is 945405533. The next prime is 945405583. The reversal of 945405563 is 365504549.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 945405563 - 2¹⁰ = 945404539 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 945405563.

It is not a weakly prime, because it can be changed into another prime (945405533) 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, 472702781 + 472702782.

It is an arithmetic number, because the mean of its divisors is an integer number (472702782).

Almost surely, 2^945405563 is an apocalyptic number.

945405563 is a deficient number, since it is larger than the sum of its proper divisors (1).

945405563 is an equidigital number, since it uses as much as digits as its factorization.

945405563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324000, while the sum is 41.

The square root of 945405563 is about 30747.4480729702. The cubic root of 945405563 is about 981.4602564143.

The spelling of 945405563 in words is "nine hundred forty-five million, four hundred five thousand, five hundred sixty-three".