4326640189 has 2 divisors, whose sum is σ = 4326640190. Its totient is φ = 4326640188.

The previous prime is 4326640187. The next prime is 4326640243. The reversal of 4326640189 is 9810466234.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2165320089 + 2161320100 = 46533^2 + 46490^2 .

It is a cyclic number.

It is not a de Polignac number, because 4326640189 - 2¹ = 4326640187 is a prime.

Together with 4326640187, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4326640187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2163320094 + 2163320095.

It is an arithmetic number, because the mean of its divisors is an integer number (2163320095).

Almost surely, 2^4326640189 is an apocalyptic number.

It is an amenable number.

4326640189 is a deficient number, since it is larger than the sum of its proper divisors (1).

4326640189 is an equidigital number, since it uses as much as digits as its factorization.

4326640189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 4326640189 is about 65777.2011338275. The cubic root of 4326640189 is about 1629.4845986129.

The spelling of 4326640189 in words is "four billion, three hundred twenty-six million, six hundred forty thousand, one hundred eighty-nine".