945473609 has 2 divisors, whose sum is σ = 945473610. Its totient is φ = 945473608.

The previous prime is 945473593. The next prime is 945473621. The reversal of 945473609 is 906374549.

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., 537312400 + 408161209 = 23180^2 + 20203^2 .

It is a cyclic number.

It is not a de Polignac number, because 945473609 - 2⁴ = 945473593 is a prime.

It is not a weakly prime, because it can be changed into another prime (945473209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 472736804 + 472736805.

It is an arithmetic number, because the mean of its divisors is an integer number (472736805).

Almost surely, 2^945473609 is an apocalyptic number.

It is an amenable number.

945473609 is a deficient number, since it is larger than the sum of its proper divisors (1).

945473609 is an equidigital number, since it uses as much as digits as its factorization.

945473609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 816480, while the sum is 47.

The square root of 945473609 is about 30748.5545839150. The cubic root of 945473609 is about 981.4838028671.

The spelling of 945473609 in words is "nine hundred forty-five million, four hundred seventy-three thousand, six hundred nine".