2745944045 has 32 divisors (see below), whose sum is σ = 3703934304. Its totient is φ = 1940889600.

The previous prime is 2745944041. The next prime is 2745944051. The reversal of 2745944045 is 5404495472.

It can be written as a sum of positive squares in 16 ways, for example, as 1863735241 + 882208804 = 43171^2 + 29702^2 .

It is not a de Polignac number, because 2745944045 - 2² = 2745944041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2745943987 and 2745944005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2745944041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131525 + ... + 150965.

It is an arithmetic number, because the mean of its divisors is an integer number (115747947).

Almost surely, 2^2745944045 is an apocalyptic number.

It is an amenable number.

2745944045 is a deficient number, since it is larger than the sum of its proper divisors (957990259).

2745944045 is a wasteful number, since it uses less digits than its factorization.

2745944045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19553.

The product of its (nonzero) digits is 806400, while the sum is 44.

The square root of 2745944045 is about 52401.7561251529. The cubic root of 2745944045 is about 1400.3305418504.

The spelling of 2745944045 in words is "two billion, seven hundred forty-five million, nine hundred forty-four thousand, forty-five".