2105616773 has 8 divisors (see below), whose sum is σ = 2271271128. Its totient is φ = 1940488704.

The previous prime is 2105616767. The next prime is 2105616781. The reversal of 2105616773 is 3776165012.

It can be written as a sum of positive squares in 4 ways, for example, as 4 + 2105616769 = 2^2 + 45887^2 .

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 2105616773 - 2¹⁰ = 2105615749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105616763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123236 + ... + 139277.

It is an arithmetic number, because the mean of its divisors is an integer number (283908891).

Almost surely, 2^2105616773 is an apocalyptic number.

It is an amenable number.

2105616773 is a deficient number, since it is larger than the sum of its proper divisors (165654355).

2105616773 is a wasteful number, since it uses less digits than its factorization.

2105616773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263143.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 2105616773 is about 45887.0000435853. Note that the first 4 decimals coincide. The cubic root of 2105616773 is about 1281.7198505921.

The spelling of 2105616773 in words is "two billion, one hundred five million, six hundred sixteen thousand, seven hundred seventy-three".