18727682688 has 192 divisors, whose sum is σ = 63312893280. Its totient is φ = 5238466560.

The previous prime is 18727682569. The next prime is 18727682693. The reversal of 18727682688 is 88628672781.

It is a tau number, because it is divible by the number of its divisors (192).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107895 + ... + 221577.

Almost surely, 2^18727682688 is an apocalyptic number.

18727682688 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 18727682688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31656446640).

18727682688 is an abundant number, since it is smaller than the sum of its proper divisors (44585210592).

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

18727682688 is a wasteful number, since it uses less digits than its factorization.

18727682688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113727 (or 113712 counting only the distinct ones).

The product of its digits is 28901376, while the sum is 63.

The spelling of 18727682688 in words is "eighteen billion, seven hundred twenty-seven million, six hundred eighty-two thousand, six hundred eighty-eight".