8190161 has 4 divisors (see below), whose sum is σ = 9360192. Its totient is φ = 7020132.

The previous prime is 8190157. The next prime is 8190163. The reversal of 8190161 is 1610918.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 8190161 - 2² = 8190157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8190161.

It is not an unprimeable number, because it can be changed into a prime (8190163) 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, 585005 + ... + 585018.

It is an arithmetic number, because the mean of its divisors is an integer number (2340048).

Almost surely, 2^8190161 is an apocalyptic number.

It is an amenable number.

8190161 is a deficient number, since it is larger than the sum of its proper divisors (1170031).

8190161 is a wasteful number, since it uses less digits than its factorization.

8190161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1170030.

The product of its (nonzero) digits is 432, while the sum is 26.

The square root of 8190161 is about 2861.8457330890. The cubic root of 8190161 is about 201.5722822526.

The spelling of 8190161 in words is "eight million, one hundred ninety thousand, one hundred sixty-one".