18948032512 has 48 divisors (see below), whose sum is σ = 38241337680. Its totient is φ = 9385365504.

The previous prime is 18948032503. The next prime is 18948032561. The reversal of 18948032512 is 21523084981.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175903 + ... + 262369.

It is an arithmetic number, because the mean of its divisors is an integer number (796694535).

Almost surely, 2^18948032512 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 18948032512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19120668840).

18948032512 is an abundant number, since it is smaller than the sum of its proper divisors (19293305168).

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

18948032512 is an equidigital number, since it uses as much as digits as its factorization.

18948032512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86596 (or 86576 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 43.

The spelling of 18948032512 in words is "eighteen billion, nine hundred forty-eight million, thirty-two thousand, five hundred twelve".