4243550189 has 2 divisors, whose sum is σ = 4243550190. Its totient is φ = 4243550188.

The previous prime is 4243550141. The next prime is 4243550219. The reversal of 4243550189 is 9810553424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3829753225 + 413796964 = 61885^2 + 20342^2 .

It is a cyclic number.

It is not a de Polignac number, because 4243550189 - 2²⁴ = 4226772973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4243550119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2121775094 + 2121775095.

It is an arithmetic number, because the mean of its divisors is an integer number (2121775095).

Almost surely, 2^4243550189 is an apocalyptic number.

It is an amenable number.

4243550189 is a deficient number, since it is larger than the sum of its proper divisors (1).

4243550189 is an equidigital number, since it uses as much as digits as its factorization.

4243550189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 4243550189 is about 65142.5374774425. The cubic root of 4243550189 is about 1618.9860785683.

The spelling of 4243550189 in words is "four billion, two hundred forty-three million, five hundred fifty thousand, one hundred eighty-nine".