4557845449 has 4 divisors (see below), whose sum is σ = 4559078020. Its totient is φ = 4556612880.

The previous prime is 4557845431. The next prime is 4557845507. The reversal of 4557845449 is 9445487554.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3177351424 + 1380494025 = 56368^2 + 37155^2 .

It is a cyclic number.

It is not a de Polignac number, because 4557845449 - 2⁷ = 4557845321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4557845449.

It is not an unprimeable number, because it can be changed into a prime (4557845249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 610722 + ... + 618139.

It is an arithmetic number, because the mean of its divisors is an integer number (1139769505).

Almost surely, 2^4557845449 is an apocalyptic number.

It is an amenable number.

4557845449 is a deficient number, since it is larger than the sum of its proper divisors (1232571).

4557845449 is a wasteful number, since it uses less digits than its factorization.

4557845449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232570.

The product of its digits is 16128000, while the sum is 55.

The square root of 4557845449 is about 67511.8171063407. The cubic root of 4557845449 is about 1658.0076558185.

The spelling of 4557845449 in words is "four billion, five hundred fifty-seven million, eight hundred forty-five thousand, four hundred forty-nine".