4165663441 has 2 divisors, whose sum is σ = 4165663442. Its totient is φ = 4165663440.

The previous prime is 4165663421. The next prime is 4165663451. The reversal of 4165663441 is 1443665614.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2282450625 + 1883212816 = 47775^2 + 43396^2 .

It is a cyclic number.

It is not a de Polignac number, because 4165663441 - 2⁹ = 4165662929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4165663394 and 4165663403.

It is not a weakly prime, because it can be changed into another prime (4165663421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2082831720 + 2082831721.

It is an arithmetic number, because the mean of its divisors is an integer number (2082831721).

Almost surely, 2^4165663441 is an apocalyptic number.

It is an amenable number.

4165663441 is a deficient number, since it is larger than the sum of its proper divisors (1).

4165663441 is an equidigital number, since it uses as much as digits as its factorization.

4165663441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 40.

The square root of 4165663441 is about 64541.9510163738. The cubic root of 4165663441 is about 1609.0198168120.

The spelling of 4165663441 in words is "four billion, one hundred sixty-five million, six hundred sixty-three thousand, four hundred forty-one".