8347981841 has 2 divisors, whose sum is σ = 8347981842. Its totient is φ = 8347981840.

The previous prime is 8347981819. The next prime is 8347981853. The reversal of 8347981841 is 1481897438.

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., 4238530816 + 4109451025 = 65104^2 + 64105^2 .

It is a cyclic number.

It is not a de Polignac number, because 8347981841 - 2¹⁸ = 8347719697 is a prime.

It is not a weakly prime, because it can be changed into another prime (8347981891) 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, 4173990920 + 4173990921.

It is an arithmetic number, because the mean of its divisors is an integer number (4173990921).

Almost surely, 2^8347981841 is an apocalyptic number.

It is an amenable number.

8347981841 is a deficient number, since it is larger than the sum of its proper divisors (1).

8347981841 is an equidigital number, since it uses as much as digits as its factorization.

8347981841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1548288, while the sum is 53.

The square root of 8347981841 is about 91367.2908704204. The cubic root of 8347981841 is about 2028.5879055781.

The spelling of 8347981841 in words is "eight billion, three hundred forty-seven million, nine hundred eighty-one thousand, eight hundred forty-one".