189197 has 4 divisors (see below), whose sum is σ = 190716. Its totient is φ = 187680.

The previous prime is 189187. The next prime is 189199. The reversal of 189197 is 791981.

189197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 791981 = 457 ⋅1733.

It can be written as a sum of positive squares in 2 ways, for example, as 98596 + 90601 = 314^2 + 301^2 .

It is a cyclic number.

It is not a de Polignac number, because 189197 - 2⁸ = 188941 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 (189199) 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, 554 + ... + 827.

It is an arithmetic number, because the mean of its divisors is an integer number (47679).

2¹⁸⁹¹⁹⁷ is an apocalyptic number.

189197 is the 233-rd centered heptagonal number.

It is an amenable number.

189197 is a deficient number, since it is larger than the sum of its proper divisors (1519).

189197 is a wasteful number, since it uses less digits than its factorization.

189197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1518.

The product of its digits is 4536, while the sum is 35.

The square root of 189197 is about 434.9678149013. The cubic root of 189197 is about 57.4078675777.

It can be divided in two parts, 1 and 89197, that added together give a palindrome (89198).

The spelling of 189197 in words is "one hundred eighty-nine thousand, one hundred ninety-seven".