11923834189 has 4 divisors (see below), whose sum is σ = 11926027900. Its totient is φ = 11921640480.

The previous prime is 11923834183. The next prime is 11923834229. The reversal of 11923834189 is 98143832911.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98143832911 = 233 ⋅421218167.

It can be written as a sum of positive squares in 2 ways, for example, as 3888146025 + 8035688164 = 62355^2 + 89642^2 .

It is a cyclic number.

It is not a de Polignac number, because 11923834189 - 2⁵ = 11923834157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11923834183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1088682 + ... + 1099579.

It is an arithmetic number, because the mean of its divisors is an integer number (2981506975).

Almost surely, 2^11923834189 is an apocalyptic number.

It is an amenable number.

11923834189 is a deficient number, since it is larger than the sum of its proper divisors (2193711).

11923834189 is an equidigital number, since it uses as much as digits as its factorization.

11923834189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2193710.

The product of its digits is 373248, while the sum is 49.

The spelling of 11923834189 in words is "eleven billion, nine hundred twenty-three million, eight hundred thirty-four thousand, one hundred eighty-nine".