945564019 has 2 divisors, whose sum is σ = 945564020. Its totient is φ = 945564018.

The previous prime is 945563959. The next prime is 945564049. The reversal of 945564019 is 910465549.

945564019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-945564019 is a prime.

It is a super-2 number, since 2×945564019² = 1788182628054864722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (945564049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 472782009 + 472782010.

It is an arithmetic number, because the mean of its divisors is an integer number (472782010).

Almost surely, 2^945564019 is an apocalyptic number.

945564019 is a deficient number, since it is larger than the sum of its proper divisors (1).

945564019 is an equidigital number, since it uses as much as digits as its factorization.

945564019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 194400, while the sum is 43.

The square root of 945564019 is about 30750.0246991771. The cubic root of 945564019 is about 981.5150863499.

The spelling of 945564019 in words is "nine hundred forty-five million, five hundred sixty-four thousand, nineteen".