2105616772 has 24 divisors (see below), whose sum is σ = 4274091584. Its totient is φ = 888937632.

The previous prime is 2105616767. The next prime is 2105616781. The reversal of 2105616772 is 2776165012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 559323 + ... + 563074.

Almost surely, 2^2105616772 is an apocalyptic number.

It is an amenable number.

2105616772 is an abundant number, since it is smaller than the sum of its proper divisors (2168474812).

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

2105616772 is a wasteful number, since it uses less digits than its factorization.

2105616772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122475 (or 1122473 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 2105616772 is about 45887.0000326890. Note that the first 4 decimals coincide. The cubic root of 2105616772 is about 1281.7198503892.

The spelling of 2105616772 in words is "two billion, one hundred five million, six hundred sixteen thousand, seven hundred seventy-two".