8198189 has 4 divisors (see below), whose sum is σ = 8554656. Its totient is φ = 7841724.

The previous prime is 8198147. The next prime is 8198191. The reversal of 8198189 is 9818918.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 8198189 - 2⁸ = 8197933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8198389) 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, 178199 + ... + 178244.

It is an arithmetic number, because the mean of its divisors is an integer number (2138664).

Almost surely, 2^8198189 is an apocalyptic number.

It is an amenable number.

8198189 is a deficient number, since it is larger than the sum of its proper divisors (356467).

8198189 is a wasteful number, since it uses less digits than its factorization.

8198189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356466.

The product of its digits is 41472, while the sum is 44.

The square root of 8198189 is about 2863.2479808777. The cubic root of 8198189 is about 201.6381211636.

The spelling of 8198189 in words is "eight million, one hundred ninety-eight thousand, one hundred eighty-nine".