2106809384 has 16 divisors (see below), whose sum is σ = 4122018720. Its totient is φ = 1007604400.

The previous prime is 2106809377. The next prime is 2106809387. The reversal of 2106809384 is 4839086012.

It is not an unprimeable number, because it can be changed into a prime (2106809387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5724842 + ... + 5725209.

It is an arithmetic number, because the mean of its divisors is an integer number (257626170).

Almost surely, 2^2106809384 is an apocalyptic number.

It is an amenable number.

2106809384 is a deficient number, since it is larger than the sum of its proper divisors (2015209336).

2106809384 is a wasteful number, since it uses less digits than its factorization.

2106809384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11450080 (or 11450076 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 2106809384 is about 45899.9932897599. The cubic root of 2106809384 is about 1281.9617915295.

The spelling of 2106809384 in words is "two billion, one hundred six million, eight hundred nine thousand, three hundred eighty-four".