2105244979 has 2 divisors, whose sum is σ = 2105244980. Its totient is φ = 2105244978.

The previous prime is 2105244971. The next prime is 2105244983. The reversal of 2105244979 is 9794425012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2105244979 - 2³ = 2105244971 is a prime.

It is not a weakly prime, because it can be changed into another prime (2105244971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052622489 + 1052622490.

It is an arithmetic number, because the mean of its divisors is an integer number (1052622490).

Almost surely, 2^2105244979 is an apocalyptic number.

2105244979 is a deficient number, since it is larger than the sum of its proper divisors (1).

2105244979 is an equidigital number, since it uses as much as digits as its factorization.

2105244979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 2105244979 is about 45882.9486737720. The cubic root of 2105244979 is about 1281.6444073290.

The spelling of 2105244979 in words is "two billion, one hundred five million, two hundred forty-four thousand, nine hundred seventy-nine".