8163867091 has 2 divisors, whose sum is σ = 8163867092. Its totient is φ = 8163867090.

The previous prime is 8163867083. The next prime is 8163867133. The reversal of 8163867091 is 1907683618.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8163867091 - 2³ = 8163867083 is a prime.

It is not a weakly prime, because it can be changed into another prime (8163867071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4081933545 + 4081933546.

It is an arithmetic number, because the mean of its divisors is an integer number (4081933546).

Almost surely, 2^8163867091 is an apocalyptic number.

8163867091 is a deficient number, since it is larger than the sum of its proper divisors (1).

8163867091 is an equidigital number, since it uses as much as digits as its factorization.

8163867091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 49.

The square root of 8163867091 is about 90354.1204981820. The cubic root of 8163867091 is about 2013.5634000724.

The spelling of 8163867091 in words is "eight billion, one hundred sixty-three million, eight hundred sixty-seven thousand, ninety-one".