18867238848 has 224 divisors, whose sum is σ = 57448704000. Its totient is φ = 6065694720.

The previous prime is 18867238829. The next prime is 18867238921. The reversal of 18867238848 is 84883276881.

18867238848 is a `hidden beast` number, since 188 + 6 + 72 + 388 + 4 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30479883 + ... + 30480501.

Almost surely, 2^18867238848 is an apocalyptic number.

18867238848 is a gapful number since it is divisible by the number (18) 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 18867238848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28724352000).

18867238848 is an abundant number, since it is smaller than the sum of its proper divisors (38581465152).

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

18867238848 is a wasteful number, since it uses less digits than its factorization.

18867238848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1240 (or 1224 counting only the distinct ones).

The product of its digits is 33030144, while the sum is 63.

The spelling of 18867238848 in words is "eighteen billion, eight hundred sixty-seven million, two hundred thirty-eight thousand, eight hundred forty-eight".