18890667048 has 128 divisors (see below), whose sum is σ = 53787888000. Its totient is φ = 5476101120.

The previous prime is 18890667041. The next prime is 18890667049. The reversal of 18890667048 is 84076609881.

It is not an unprimeable number, because it can be changed into a prime (18890667041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 823186 + ... + 845822.

It is an arithmetic number, because the mean of its divisors is an integer number (420217875).

Almost surely, 2^18890667048 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 18890667048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26893944000).

18890667048 is an abundant number, since it is smaller than the sum of its proper divisors (34897220952).

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

18890667048 is a wasteful number, since it uses less digits than its factorization.

18890667048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22795 (or 22791 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 57.

The spelling of 18890667048 in words is "eighteen billion, eight hundred ninety million, six hundred sixty-seven thousand, forty-eight".