2105650768 has 30 divisors (see below), whose sum is σ = 4417667214. Its totient is φ = 971837568.

The previous prime is 2105650721. The next prime is 2105650777. The reversal of 2105650768 is 8670565012.

It can be written as a sum of positive squares in 3 ways, for example, as 23736384 + 2081914384 = 4872^2 + 45628^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2105650768.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 386655 + ... + 392062.

Almost surely, 2^2105650768 is an apocalyptic number.

It is an amenable number.

2105650768 is an abundant number, since it is smaller than the sum of its proper divisors (2312016446).

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

2105650768 is a wasteful number, since it uses less digits than its factorization.

2105650768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778751 (or 778732 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 2105650768 is about 45887.3704629062. The cubic root of 2105650768 is about 1281.7267483069.

It can be divided in two parts, 21056 and 50768, that added together give a square (71824 = 268²).

The spelling of 2105650768 in words is "two billion, one hundred five million, six hundred fifty thousand, seven hundred sixty-eight".