2145340244 has 36 divisors (see below), whose sum is σ = 3900428532. Its totient is φ = 1032433920.

The previous prime is 2145340237. The next prime is 2145340273. The reversal of 2145340244 is 4420435412.

It can be written as a sum of positive squares in 2 ways, for example, as 1619096644 + 526243600 = 40238^2 + 22940^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 755852 + ... + 758684.

It is an arithmetic number, because the mean of its divisors is an integer number (108345237).

Almost surely, 2^2145340244 is an apocalyptic number.

It is an amenable number.

2145340244 is a deficient number, since it is larger than the sum of its proper divisors (1755088288).

2145340244 is a wasteful number, since it uses less digits than its factorization.

2145340244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3096 (or 3063 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 29.

The square root of 2145340244 is about 46317.8177810656. The cubic root of 2145340244 is about 1289.7297761410.

Adding to 2145340244 its reverse (4420435412), we get a palindrome (6565775656).

The spelling of 2145340244 in words is "two billion, one hundred forty-five million, three hundred forty thousand, two hundred forty-four".