2196945844 has 12 divisors (see below), whose sum is σ = 3845212000. Its totient is φ = 1098313848.

The previous prime is 2196945823. The next prime is 2196945899. The reversal of 2196945844 is 4485496912.

It is a junction number, because it is equal to n+sod(n) for n = 2196945791 and 2196945800.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5394 + ... + 66505.

Almost surely, 2^2196945844 is an apocalyptic number.

It is an amenable number.

2196945844 is a deficient number, since it is larger than the sum of its proper divisors (1648266156).

2196945844 is a wasteful number, since it uses less digits than its factorization.

2196945844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79542 (or 79540 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 52.

The square root of 2196945844 is about 46871.5888785520. The cubic root of 2196945844 is about 1299.9893182554.

The spelling of 2196945844 in words is "two billion, one hundred ninety-six million, nine hundred forty-five thousand, eight hundred forty-four".