8196161 has 4 divisors (see below), whose sum is σ = 8226900. Its totient is φ = 8165424.

The previous prime is 8196157. The next prime is 8196173. The reversal of 8196161 is 1616918.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1616918 = 2 ⋅808459.

It can be written as a sum of positive squares in 2 ways, for example, as 2119936 + 6076225 = 1456^2 + 2465^2 .

It is a cyclic number.

It is not a de Polignac number, because 8196161 - 2² = 8196157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8196061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14966 + ... + 15503.

It is an arithmetic number, because the mean of its divisors is an integer number (2056725).

Almost surely, 2^8196161 is an apocalyptic number.

It is an amenable number.

8196161 is a deficient number, since it is larger than the sum of its proper divisors (30739).

8196161 is a wasteful number, since it uses less digits than its factorization.

8196161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30738.

The product of its digits is 2592, while the sum is 32.

The square root of 8196161 is about 2862.8938157047. The cubic root of 8196161 is about 201.6214932704.

The spelling of 8196161 in words is "eight million, one hundred ninety-six thousand, one hundred sixty-one".