18839081548 has 60 divisors (see below), whose sum is σ = 39702135872. Its totient is φ = 7813320480.

The previous prime is 18839081537. The next prime is 18839081549. The reversal of 18839081548 is 84518093881.

It is not an unprimeable number, because it can be changed into a prime (18839081549) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 266086 + ... + 329362.

Almost surely, 2^18839081548 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 18839081548, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19851067936).

18839081548 is an abundant number, since it is smaller than the sum of its proper divisors (20863054324).

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

18839081548 is an equidigital number, since it uses as much as digits as its factorization.

18839081548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63340 (or 63317 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 55.

The spelling of 18839081548 in words is "eighteen billion, eight hundred thirty-nine million, eighty-one thousand, five hundred forty-eight".