2105848644 has 12 divisors (see below), whose sum is σ = 4913646864. Its totient is φ = 701949544.

The previous prime is 2105848643. The next prime is 2105848729. The reversal of 2105848644 is 4468485012.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×2105848644² = 8869197022873277472, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2105848596 and 2105848605.

It is not an unprimeable number, because it can be changed into a prime (2105848643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87743682 + ... + 87743705.

It is an arithmetic number, because the mean of its divisors is an integer number (409470572).

Almost surely, 2^2105848644 is an apocalyptic number.

It is an amenable number.

2105848644 is an abundant number, since it is smaller than the sum of its proper divisors (2807798220).

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

2105848644 is a wasteful number, since it uses less digits than its factorization.

2105848644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175487394 (or 175487392 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 42.

The square root of 2105848644 is about 45889.5265174963. The cubic root of 2105848644 is about 1281.7668966262.

The spelling of 2105848644 in words is "two billion, one hundred five million, eight hundred forty-eight thousand, six hundred forty-four".