3198173189 has 4 divisors (see below), whose sum is σ = 3198287340. Its totient is φ = 3198059040.

The previous prime is 3198173113. The next prime is 3198173191. The reversal of 3198173189 is 9813718913.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9813718913 = 23 ⋅426683431.

It can be written as a sum of positive squares in 2 ways, for example, as 895804900 + 2302368289 = 29930^2 + 47983^2 .

It is a cyclic number.

It is not a de Polignac number, because 3198173189 - 2⁸ = 3198172933 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3198173089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16979 + ... + 81759.

It is an arithmetic number, because the mean of its divisors is an integer number (799571835).

Almost surely, 2^3198173189 is an apocalyptic number.

It is an amenable number.

3198173189 is a deficient number, since it is larger than the sum of its proper divisors (114151).

3198173189 is an equidigital number, since it uses as much as digits as its factorization.

3198173189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114150.

The product of its digits is 326592, while the sum is 50.

The square root of 3198173189 is about 56552.3933092137. The cubic root of 3198173189 is about 1473.3321281916.

The spelling of 3198173189 in words is "three billion, one hundred ninety-eight million, one hundred seventy-three thousand, one hundred eighty-nine".