4163681 has 2 divisors, whose sum is σ = 4163682. Its totient is φ = 4163680.

The previous prime is 4163671. The next prime is 4163693. The reversal of 4163681 is 1863614.

4163681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3389281 + 774400 = 1841^2 + 880^2 .

It is a cyclic number.

It is not a de Polignac number, because 4163681 - 2¹⁰ = 4162657 is a prime.

It is a super-2 number, since 2×4163681² = 34672478939522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4163611) 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, 2081840 + 2081841.

It is an arithmetic number, because the mean of its divisors is an integer number (2081841).

Almost surely, 2^4163681 is an apocalyptic number.

It is an amenable number.

4163681 is a deficient number, since it is larger than the sum of its proper divisors (1).

4163681 is an equidigital number, since it uses as much as digits as its factorization.

4163681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 29.

The square root of 4163681 is about 2040.5099852733. The cubic root of 4163681 is about 160.8764531906.

The spelling of 4163681 in words is "four million, one hundred sixty-three thousand, six hundred eighty-one".