423130189 has 2 divisors, whose sum is σ = 423130190. Its totient is φ = 423130188.

The previous prime is 423130163. The next prime is 423130219. The reversal of 423130189 is 981031324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 333354564 + 89775625 = 18258^2 + 9475^2 .

It is a cyclic number.

It is not a de Polignac number, because 423130189 - 2²³ = 414741581 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 423130189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423130159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211565094 + 211565095.

It is an arithmetic number, because the mean of its divisors is an integer number (211565095).

Almost surely, 2^423130189 is an apocalyptic number.

It is an amenable number.

423130189 is a deficient number, since it is larger than the sum of its proper divisors (1).

423130189 is an equidigital number, since it uses as much as digits as its factorization.

423130189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 423130189 is about 20570.1285606094. The cubic root of 423130189 is about 750.7430792382.

The spelling of 423130189 in words is "four hundred twenty-three million, one hundred thirty thousand, one hundred eighty-nine".