2809091044 has 12 divisors (see below), whose sum is σ = 4989281584. Its totient is φ = 1383582024.

The previous prime is 2809091011. The next prime is 2809091063. The reversal of 2809091044 is 4401909082.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2809090994 and 2809091012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5240574 + ... + 5241109.

Almost surely, 2^2809091044 is an apocalyptic number.

It is an amenable number.

2809091044 is a deficient number, since it is larger than the sum of its proper divisors (2180190540).

2809091044 is a wasteful number, since it uses less digits than its factorization.

2809091044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10481754 (or 10481752 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 2809091044 is about 53000.8588987009. The cubic root of 2809091044 is about 1410.9835104539.

The spelling of 2809091044 in words is "two billion, eight hundred nine million, ninety-one thousand, forty-four".