18944042832 has 360 divisors, whose sum is σ = 64972279008. Its totient is φ = 5297011200.

The previous prime is 18944042783. The next prime is 18944042833. The reversal of 18944042832 is 23824044981.

18944042832 is a `hidden beast` number, since 189 + 4 + 40 + 428 + 3 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18944042833) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 7226482 + ... + 7229102.

Almost surely, 2^18944042832 is an apocalyptic number.

18944042832 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 18944042832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32486139504).

18944042832 is an abundant number, since it is smaller than the sum of its proper divisors (46028236176).

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

18944042832 is a wasteful number, since it uses less digits than its factorization.

18944042832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2681 (or 2650 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 45.

The spelling of 18944042832 in words is "eighteen billion, nine hundred forty-four million, forty-two thousand, eight hundred thirty-two".