4163346581 has 2 divisors, whose sum is σ = 4163346582. Its totient is φ = 4163346580.

The previous prime is 4163346571. The next prime is 4163346589. The reversal of 4163346581 is 1856433614.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2782035025 + 1381311556 = 52745^2 + 37166^2 .

It is a cyclic number.

It is not a de Polignac number, because 4163346581 - 2³⁰ = 3089604757 is a prime.

It is a super-2 number, since 2×4163346581² = 34666909507048779122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4163346589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2081673290 + 2081673291.

It is an arithmetic number, because the mean of its divisors is an integer number (2081673291).

Almost surely, 2^4163346581 is an apocalyptic number.

It is an amenable number.

4163346581 is a deficient number, since it is larger than the sum of its proper divisors (1).

4163346581 is an equidigital number, since it uses as much as digits as its factorization.

4163346581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 41.

The square root of 4163346581 is about 64524.0000387453. Note that the first 4 decimals coincide. The cubic root of 4163346581 is about 1608.7214597762.

The spelling of 4163346581 in words is "four billion, one hundred sixty-three million, three hundred forty-six thousand, five hundred eighty-one".