6438350441 has 2 divisors, whose sum is σ = 6438350442. Its totient is φ = 6438350440.

The previous prime is 6438350339. The next prime is 6438350447. The reversal of 6438350441 is 1440538346.

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., 6212750041 + 225600400 = 78821^2 + 15020^2 .

It is a cyclic number.

It is not a de Polignac number, because 6438350441 - 2³⁰ = 5364608617 is a prime.

It is a super-2 number, since 2×6438350441² = 82904712802249788962, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6438350395 and 6438350404.

It is not a weakly prime, because it can be changed into another prime (6438350447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3219175220 + 3219175221.

It is an arithmetic number, because the mean of its divisors is an integer number (3219175221).

Almost surely, 2^6438350441 is an apocalyptic number.

It is an amenable number.

6438350441 is a deficient number, since it is larger than the sum of its proper divisors (1).

6438350441 is an equidigital number, since it uses as much as digits as its factorization.

6438350441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 38.

The square root of 6438350441 is about 80239.3322566932. The cubic root of 6438350441 is about 1860.3366293444.

Adding to 6438350441 its reverse (1440538346), we get a palindrome (7878888787).

The spelling of 6438350441 in words is "six billion, four hundred thirty-eight million, three hundred fifty thousand, four hundred forty-one".