2449045509 has 4 divisors (see below), whose sum is σ = 3265394016. Its totient is φ = 1632697004.

The previous prime is 2449045471. The next prime is 2449045531. The reversal of 2449045509 is 9055409442.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2449045509 - 2¹¹ = 2449043461 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2449045409) 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, 408174249 + ... + 408174254.

It is an arithmetic number, because the mean of its divisors is an integer number (816348504).

Almost surely, 2^2449045509 is an apocalyptic number.

It is an amenable number.

2449045509 is a deficient number, since it is larger than the sum of its proper divisors (816348507).

2449045509 is an equidigital number, since it uses as much as digits as its factorization.

2449045509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816348506.

The product of its (nonzero) digits is 259200, while the sum is 42.

The square root of 2449045509 is about 49487.8319286671. The cubic root of 2449045509 is about 1347.9246592464.

The spelling of 2449045509 in words is "two billion, four hundred forty-nine million, forty-five thousand, five hundred nine".