2105767745 has 8 divisors (see below), whose sum is σ = 2528116584. Its totient is φ = 1683817344.

The previous prime is 2105767733. The next prime is 2105767759. The reversal of 2105767745 is 5477675012.

It can be written as a sum of positive squares in 4 ways, for example, as 160604929 + 1945162816 = 12673^2 + 44104^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2105767745 - 2¹⁰ = 2105766721 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2105767696 and 2105767705.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87854 + ... + 109223.

It is an arithmetic number, because the mean of its divisors is an integer number (316014573).

Almost surely, 2^2105767745 is an apocalyptic number.

It is an amenable number.

2105767745 is a deficient number, since it is larger than the sum of its proper divisors (422348839).

2105767745 is a wasteful number, since it uses less digits than its factorization.

2105767745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199219.

The product of its (nonzero) digits is 411600, while the sum is 44.

The square root of 2105767745 is about 45888.6450551768. The cubic root of 2105767745 is about 1281.7504828178.

The spelling of 2105767745 in words is "two billion, one hundred five million, seven hundred sixty-seven thousand, seven hundred forty-five".