8381884957 has 2 divisors, whose sum is σ = 8381884958. Its totient is φ = 8381884956.

The previous prime is 8381884933. The next prime is 8381885023. The reversal of 8381884957 is 7594881838.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7983243801 + 398641156 = 89349^2 + 19966^2 .

It is a cyclic number.

It is not a de Polignac number, because 8381884957 - 2⁷ = 8381884829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8381884895 and 8381884904.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8381881957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4190942478 + 4190942479.

It is an arithmetic number, because the mean of its divisors is an integer number (4190942479).

Almost surely, 2^8381884957 is an apocalyptic number.

It is an amenable number.

8381884957 is a deficient number, since it is larger than the sum of its proper divisors (1).

8381884957 is an equidigital number, since it uses as much as digits as its factorization.

8381884957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15482880, while the sum is 61.

The square root of 8381884957 is about 91552.6348992753. The cubic root of 8381884957 is about 2031.3303870331.

The spelling of 8381884957 in words is "eight billion, three hundred eighty-one million, eight hundred eighty-four thousand, nine hundred fifty-seven".