2105403784 has 16 divisors (see below), whose sum is σ = 4306507920. Its totient is φ = 957001680.

The previous prime is 2105403763. The next prime is 2105403791. The reversal of 2105403784 is 4873045012.

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, 11962434 + ... + 11962609.

It is an arithmetic number, because the mean of its divisors is an integer number (269156745).

Almost surely, 2^2105403784 is an apocalyptic number.

It is an amenable number.

2105403784 is an abundant number, since it is smaller than the sum of its proper divisors (2201104136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2105403784 is a wasteful number, since it uses less digits than its factorization.

2105403784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23925060 (or 23925056 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 2105403784 is about 45884.6791859767. The cubic root of 2105403784 is about 1281.6766326242.

Adding to 2105403784 its reverse (4873045012), we get a palindrome (6978448796).

The spelling of 2105403784 in words is "two billion, one hundred five million, four hundred three thousand, seven hundred eighty-four".