18889048608 has 48 divisors (see below), whose sum is σ = 49593833856. Its totient is φ = 6295069440.

The previous prime is 18889048603. The next prime is 18889048639. The reversal of 18889048608 is 80684098881.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (18889048603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 534198 + ... + 568458.

It is an arithmetic number, because the mean of its divisors is an integer number (1033204872).

Almost surely, 2^18889048608 is an apocalyptic number.

It is an amenable number.

18889048608 is an abundant number, since it is smaller than the sum of its proper divisors (30704785248).

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

18889048608 is a wasteful number, since it uses less digits than its factorization.

18889048608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40017 (or 40009 counting only the distinct ones).

The product of its (nonzero) digits is 7077888, while the sum is 60.

The spelling of 18889048608 in words is "eighteen billion, eight hundred eighty-nine million, forty-eight thousand, six hundred eight".