12189732519 has 4 divisors (see below), whose sum is σ = 16252976696. Its totient is φ = 8126488344.

The previous prime is 12189732491. The next prime is 12189732539. The reversal of 12189732519 is 91523798121.

It is a happy number.

12189732519 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12189732519 - 2¹¹ = 12189730471 is a prime.

It is a super-2 number, since 2×12189732519² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12189732539) 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, 2031622084 + ... + 2031622089.

It is an arithmetic number, because the mean of its divisors is an integer number (4063244174).

Almost surely, 2^12189732519 is an apocalyptic number.

12189732519 is a deficient number, since it is larger than the sum of its proper divisors (4063244177).

12189732519 is an equidigital number, since it uses as much as digits as its factorization.

12189732519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4063244176.

The product of its digits is 272160, while the sum is 48.

The spelling of 12189732519 in words is "twelve billion, one hundred eighty-nine million, seven hundred thirty-two thousand, five hundred nineteen".