443418161 has 2 divisors, whose sum is σ = 443418162. Its totient is φ = 443418160.

The previous prime is 443418119. The next prime is 443418223. The reversal of 443418161 is 161814344.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 439153936 + 4264225 = 20956^2 + 2065^2 .

It is a cyclic number.

It is not a de Polignac number, because 443418161 - 2⁶ = 443418097 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (443418061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221709080 + 221709081.

It is an arithmetic number, because the mean of its divisors is an integer number (221709081).

Almost surely, 2^443418161 is an apocalyptic number.

It is an amenable number.

443418161 is a deficient number, since it is larger than the sum of its proper divisors (1).

443418161 is an equidigital number, since it uses as much as digits as its factorization.

443418161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 32.

The square root of 443418161 is about 21057.4965511098. The cubic root of 443418161 is about 762.5549750204.

The spelling of 443418161 in words is "four hundred forty-three million, four hundred eighteen thousand, one hundred sixty-one".