18481079232 has 1008 divisors, whose sum is σ = 73189648896. Its totient is φ = 4516300800.

The previous prime is 18481079213. The next prime is 18481079233. The reversal of 18481079232 is 23297018481.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (1008).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18481079233) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 302968482 + ... + 302968542.

Almost surely, 2^18481079232 is an apocalyptic number.

18481079232 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 18481079232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36594824448).

18481079232 is an abundant number, since it is smaller than the sum of its proper divisors (54708569664).

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

18481079232 is a wasteful number, since it uses less digits than its factorization.

18481079232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 18481079232 in words is "eighteen billion, four hundred eighty-one million, seventy-nine thousand, two hundred thirty-two".