18332044416 has 384 divisors, whose sum is σ = 62954236800. Its totient is φ = 5201584128.

The previous prime is 18332044399. The next prime is 18332044487. The reversal of 18332044416 is 61444023381.

18332044416 is a `hidden beast` number, since 1 + 8 + 3 + 3 + 204 + 441 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 58568676 + ... + 58568988.

It is an arithmetic number, because the mean of its divisors is an integer number (163943325).

Almost surely, 2^18332044416 is an apocalyptic number.

18332044416 is a gapful number since it is divisible by the number (16) 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 18332044416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31477118400).

18332044416 is an abundant number, since it is smaller than the sum of its proper divisors (44622192384).

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

18332044416 is an equidigital number, since it uses as much as digits as its factorization.

18332044416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618 (or 594 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

Adding to 18332044416 its reverse (61444023381), we get a palindrome (79776067797).

The spelling of 18332044416 in words is "eighteen billion, three hundred thirty-two million, forty-four thousand, four hundred sixteen".