143198189 has 2 divisors, whose sum is σ = 143198190. Its totient is φ = 143198188.

The previous prime is 143198179. The next prime is 143198203. The reversal of 143198189 is 981891341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140896900 + 2301289 = 11870^2 + 1517^2 .

It is a cyclic number.

It is not a de Polignac number, because 143198189 - 2⁴ = 143198173 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143198149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71599094 + 71599095.

It is an arithmetic number, because the mean of its divisors is an integer number (71599095).

Almost surely, 2^143198189 is an apocalyptic number.

It is an amenable number.

143198189 is a deficient number, since it is larger than the sum of its proper divisors (1).

143198189 is an equidigital number, since it uses as much as digits as its factorization.

143198189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 44.

The square root of 143198189 is about 11966.5445722648. The cubic root of 143198189 is about 523.1736253390.

The spelling of 143198189 in words is "one hundred forty-three million, one hundred ninety-eight thousand, one hundred eighty-nine".