18466443072 has 896 divisors, whose sum is σ = 72348303360. Its totient is φ = 4516300800.

The previous prime is 18466443049. The next prime is 18466443077. The reversal of 18466443072 is 27034466481.

18466443072 is a `hidden beast` number, since 1 + 84 + 66 + 443 + 0 + 72 = 666.

It is a taxicab number since it can be written as a sum of two cubes in more than one way. Here 18466443072 = 1122³ + 2574³ = 1716³ + 2376³.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18466443077) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 499093038 + ... + 499093074.

Almost surely, 2^18466443072 is an apocalyptic number.

18466443072 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 18466443072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36174151680).

18466443072 is an abundant number, since it is smaller than the sum of its proper divisors (53881860288).

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

18466443072 is a wasteful number, since it uses less digits than its factorization.

18466443072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 45.

The spelling of 18466443072 in words is "eighteen billion, four hundred sixty-six million, four hundred forty-three thousand, seventy-two".