2808890109 has 16 divisors (see below), whose sum is σ = 4213996800. Its totient is φ = 1848888288.

The previous prime is 2808890083. The next prime is 2808890141. The reversal of 2808890109 is 9010988082.

It is not a de Polignac number, because 2808890109 - 2¹⁶ = 2808824573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2808890159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 656304 + ... + 660569.

It is an arithmetic number, because the mean of its divisors is an integer number (263374800).

Almost surely, 2^2808890109 is an apocalyptic number.

It is an amenable number.

2808890109 is a deficient number, since it is larger than the sum of its proper divisors (1405106691).

2808890109 is a wasteful number, since it uses less digits than its factorization.

2808890109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316961 (or 1316955 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 45.

The square root of 2808890109 is about 52998.9632823134. The cubic root of 2808890109 is about 1410.9498669814.

The spelling of 2808890109 in words is "two billion, eight hundred eight million, eight hundred ninety thousand, one hundred nine".