2145044045 has 32 divisors (see below), whose sum is σ = 2805511680. Its totient is φ = 1569093120.

The previous prime is 2145044029. The next prime is 2145044047. The reversal of 2145044045 is 5404405412.

It is not a de Polignac number, because 2145044045 - 2⁴ = 2145044029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2145043999 and 2145044017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145044047) 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, 322655 + ... + 329235.

It is an arithmetic number, because the mean of its divisors is an integer number (87672240).

Almost surely, 2^2145044045 is an apocalyptic number.

It is an amenable number.

2145044045 is a deficient number, since it is larger than the sum of its proper divisors (660467635).

2145044045 is a wasteful number, since it uses less digits than its factorization.

2145044045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6725.

The product of its (nonzero) digits is 12800, while the sum is 29.

The square root of 2145044045 is about 46314.6202078782. The cubic root of 2145044045 is about 1289.6704173744.

Adding to 2145044045 its reverse (5404405412), we get a palindrome (7549449457).

The spelling of 2145044045 in words is "two billion, one hundred forty-five million, forty-four thousand, forty-five".