18043230432 has 192 divisors, whose sum is σ = 50843842560. Its totient is φ = 5582954496.

The previous prime is 18043230427. The next prime is 18043230437. The reversal of 18043230432 is 23403234081.

It is an interprime number because it is at equal distance from previous prime (18043230427) and next prime (18043230437).

It is a self number, because there is not a number n which added to its sum of digits gives 18043230432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18043230437) 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 31 ways as a sum of consecutive naturals, for example, 65137878 + ... + 65138154.

It is an arithmetic number, because the mean of its divisors is an integer number (264811680).

Almost surely, 2^18043230432 is an apocalyptic number.

18043230432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18043230432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25421921280).

18043230432 is an abundant number, since it is smaller than the sum of its proper divisors (32800612128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18043230432 is a wasteful number, since it uses less digits than its factorization.

18043230432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713 (or 705 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The spelling of 18043230432 in words is "eighteen billion, forty-three million, two hundred thirty thousand, four hundred thirty-two".