8118161 has 2 divisors, whose sum is σ = 8118162. Its totient is φ = 8118160.

The previous prime is 8118157. The next prime is 8118179. The reversal of 8118161 is 1618118.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4177936 + 3940225 = 2044^2 + 1985^2 .

It is a cyclic number.

It is not a de Polignac number, because 8118161 - 2² = 8118157 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8118161.

It is not a weakly prime, because it can be changed into another prime (8118101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4059080 + 4059081.

It is an arithmetic number, because the mean of its divisors is an integer number (4059081).

Almost surely, 2^8118161 is an apocalyptic number.

It is an amenable number.

8118161 is a deficient number, since it is larger than the sum of its proper divisors (1).

8118161 is an equidigital number, since it uses as much as digits as its factorization.

8118161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 384, while the sum is 26.

The square root of 8118161 is about 2849.2386702416. The cubic root of 8118161 is about 200.9798664685.

The spelling of 8118161 in words is "eight million, one hundred eighteen thousand, one hundred sixty-one".