4572945449 has 2 divisors, whose sum is σ = 4572945450. Its totient is φ = 4572945448.

The previous prime is 4572945407. The next prime is 4572945473. The reversal of 4572945449 is 9445492754.

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., 4545456400 + 27489049 = 67420^2 + 5243^2 .

It is a cyclic number.

It is not a de Polignac number, because 4572945449 - 2¹² = 4572941353 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4572945449.

It is not a weakly prime, because it can be changed into another prime (4572945499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2286472724 + 2286472725.

It is an arithmetic number, because the mean of its divisors is an integer number (2286472725).

Almost surely, 2^4572945449 is an apocalyptic number.

It is an amenable number.

4572945449 is a deficient number, since it is larger than the sum of its proper divisors (1).

4572945449 is an equidigital number, since it uses as much as digits as its factorization.

4572945449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7257600, while the sum is 53.

The square root of 4572945449 is about 67623.5569088169. The cubic root of 4572945449 is about 1659.8366134493.

The spelling of 4572945449 in words is "four billion, five hundred seventy-two million, nine hundred forty-five thousand, four hundred forty-nine".