189422587009 has 4 divisors (see below), whose sum is σ = 189494971204. Its totient is φ = 189350202816.

The previous prime is 189422586959. The next prime is 189422587027. The reversal of 189422587009 is 900785224981.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 165056937984 + 24365649025 = 406272^2 + 156095^2 .

It is a cyclic number.

It is not a de Polignac number, because 189422587009 - 2¹³ = 189422578817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189422587309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36188172 + ... + 36193405.

It is an arithmetic number, because the mean of its divisors is an integer number (47373742801).

Almost surely, 2^189422587009 is an apocalyptic number.

It is an amenable number.

189422587009 is a deficient number, since it is larger than the sum of its proper divisors (72384195).

189422587009 is an equidigital number, since it uses as much as digits as its factorization.

189422587009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72384194.

The product of its (nonzero) digits is 2903040, while the sum is 55.

The spelling of 189422587009 in words is "one hundred eighty-nine billion, four hundred twenty-two million, five hundred eighty-seven thousand, nine".