18043006432 has 48 divisors (see below), whose sum is σ = 38811295152. Its totient is φ = 8188702720.

The previous prime is 18043006427. The next prime is 18043006439. The reversal of 18043006432 is 23460034081.

It is a super-2 number, since 2×18043006432² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18043006394 and 18043006403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18043006439) 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 7 ways as a sum of consecutive naturals, for example, 190608 + ... + 269104.

It is an arithmetic number, because the mean of its divisors is an integer number (808568649).

Almost surely, 2^18043006432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18043006432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19405647576).

18043006432 is an abundant number, since it is smaller than the sum of its proper divisors (20768288720).

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

18043006432 is a wasteful number, since it uses less digits than its factorization.

18043006432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79171 (or 79163 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The spelling of 18043006432 in words is "eighteen billion, forty-three million, six thousand, four hundred thirty-two".