9158161 has 2 divisors, whose sum is σ = 9158162. Its totient is φ = 9158160.

The previous prime is 9158159. The next prime is 9158167. The reversal of 9158161 is 1618519.

9158161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5475600 + 3682561 = 2340^2 + 1919^2 .

It is a cyclic number.

It is not a de Polignac number, because 9158161 - 2¹ = 9158159 is a prime.

Together with 9158159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (9158167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4579080 + 4579081.

It is an arithmetic number, because the mean of its divisors is an integer number (4579081).

Almost surely, 2^9158161 is an apocalyptic number.

It is an amenable number.

9158161 is a deficient number, since it is larger than the sum of its proper divisors (1).

9158161 is an equidigital number, since it uses as much as digits as its factorization.

9158161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 31.

The square root of 9158161 is about 3026.2453634826. The cubic root of 9158161 is about 209.2197881687.

The spelling of 9158161 in words is "nine million, one hundred fifty-eight thousand, one hundred sixty-one".