4194581 has 2 divisors, whose sum is σ = 4194582. Its totient is φ = 4194580.

The previous prime is 4194559. The next prime is 4194583. The reversal of 4194581 is 1854914.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4165681 + 28900 = 2041^2 + 170^2 .

It is a cyclic number.

It is not a de Polignac number, because 4194581 - 2¹⁴ = 4178197 is a prime.

It is a super-2 number, since 2×4194581² = 35189019531122, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 4194583, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4194583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2097290 + 2097291.

It is an arithmetic number, because the mean of its divisors is an integer number (2097291).

Almost surely, 2^4194581 is an apocalyptic number.

It is an amenable number.

4194581 is a deficient number, since it is larger than the sum of its proper divisors (1).

4194581 is an equidigital number, since it uses as much as digits as its factorization.

4194581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 32.

The square root of 4194581 is about 2048.0676258366. The cubic root of 4194581 is about 161.2734445010.

The spelling of 4194581 in words is "four million, one hundred ninety-four thousand, five hundred eighty-one".