6442878941 has 2 divisors, whose sum is σ = 6442878942. Its totient is φ = 6442878940.

The previous prime is 6442878917. The next prime is 6442878961. The reversal of 6442878941 is 1498782446.

6442878941 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6212750041 + 230128900 = 78821^2 + 15170^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6442878941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6442878961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3221439470 + 3221439471.

It is an arithmetic number, because the mean of its divisors is an integer number (3221439471).

Almost surely, 2^6442878941 is an apocalyptic number.

It is an amenable number.

6442878941 is a deficient number, since it is larger than the sum of its proper divisors (1).

6442878941 is an equidigital number, since it uses as much as digits as its factorization.

6442878941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3096576, while the sum is 53.

The square root of 6442878941 is about 80267.5460008589. The cubic root of 6442878941 is about 1860.7726913505.

The spelling of 6442878941 in words is "six billion, four hundred forty-two million, eight hundred seventy-eight thousand, nine hundred forty-one".