2163761441 has 2 divisors, whose sum is σ = 2163761442. Its totient is φ = 2163761440.

The previous prime is 2163761417. The next prime is 2163761459. The reversal of 2163761441 is 1441673612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2034370816 + 129390625 = 45104^2 + 11375^2 .

It is a cyclic number.

It is not a de Polignac number, because 2163761441 - 2¹⁸ = 2163499297 is a prime.

It is not a weakly prime, because it can be changed into another prime (2163761471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1081880720 + 1081880721.

It is an arithmetic number, because the mean of its divisors is an integer number (1081880721).

Almost surely, 2^2163761441 is an apocalyptic number.

It is an amenable number.

2163761441 is a deficient number, since it is larger than the sum of its proper divisors (1).

2163761441 is an equidigital number, since it uses as much as digits as its factorization.

2163761441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 35.

The square root of 2163761441 is about 46516.2492146562. The cubic root of 2163761441 is about 1293.4107287900.

The spelling of 2163761441 in words is "two billion, one hundred sixty-three million, seven hundred sixty-one thousand, four hundred forty-one".