2110441661 has 2 divisors, whose sum is σ = 2110441662. Its totient is φ = 2110441660.

The previous prime is 2110441651. The next prime is 2110441673. The reversal of 2110441661 is 1661440112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1506216100 + 604225561 = 38810^2 + 24581^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2110441661 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2110441661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2110441601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055220830 + 1055220831.

It is an arithmetic number, because the mean of its divisors is an integer number (1055220831).

Almost surely, 2^2110441661 is an apocalyptic number.

It is an amenable number.

2110441661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2110441661 is an equidigital number, since it uses as much as digits as its factorization.

2110441661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 2110441661 is about 45939.5435436618. The cubic root of 2110441661 is about 1282.6980971683.

Adding to 2110441661 its reverse (1661440112), we get a palindrome (3771881773).

The spelling of 2110441661 in words is "two billion, one hundred ten million, four hundred forty-one thousand, six hundred sixty-one".