8161108867 has 2 divisors, whose sum is σ = 8161108868. Its totient is φ = 8161108866.

The previous prime is 8161108843. The next prime is 8161108897. The reversal of 8161108867 is 7688011618.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8161108867 is a prime.

It is not a weakly prime, because it can be changed into another prime (8161108897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4080554433 + 4080554434.

It is an arithmetic number, because the mean of its divisors is an integer number (4080554434).

Almost surely, 2^8161108867 is an apocalyptic number.

8161108867 is a deficient number, since it is larger than the sum of its proper divisors (1).

8161108867 is an equidigital number, since it uses as much as digits as its factorization.

8161108867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129024, while the sum is 46.

The square root of 8161108867 is about 90338.8557985986. The cubic root of 8161108867 is about 2013.3366086747.

The spelling of 8161108867 in words is "eight billion, one hundred sixty-one million, one hundred eight thousand, eight hundred sixty-seven".