2044240045 has 4 divisors (see below), whose sum is σ = 2453088060. Its totient is φ = 1635392032.

The previous prime is 2044240027. The next prime is 2044240063. The reversal of 2044240045 is 5400424402.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (2044240027) and next prime (2044240063).

It can be written as a sum of positive squares in 2 ways, for example, as 647498916 + 1396741129 = 25446^2 + 37373^2 .

It is a cyclic number.

It is not a de Polignac number, because 2044240045 - 2⁵ = 2044240013 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204424000 + ... + 204424009.

It is an arithmetic number, because the mean of its divisors is an integer number (613272015).

Almost surely, 2^2044240045 is an apocalyptic number.

It is an amenable number.

2044240045 is a deficient number, since it is larger than the sum of its proper divisors (408848015).

2044240045 is an equidigital number, since it uses as much as digits as its factorization.

2044240045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408848014.

The product of its (nonzero) digits is 5120, while the sum is 25.

The square root of 2044240045 is about 45213.2728852933. The cubic root of 2044240045 is about 1269.1432096942.

Adding to 2044240045 its reverse (5400424402), we get a palindrome (7444664447).

The spelling of 2044240045 in words is "two billion, forty-four million, two hundred forty thousand, forty-five".