18068883840 has 1280 divisors, whose sum is σ = 81575683200. Its totient is φ = 3715891200.

The previous prime is 18068883827. The next prime is 18068883883. The reversal of 18068883840 is 4838886081.

18068883840 is a `hidden beast` number, since 180 + 6 + 8 + 88 + 384 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 178899790 + ... + 178899890.

Almost surely, 2^18068883840 is an apocalyptic number.

18068883840 is a gapful number since it is divisible by the number (10) 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 18068883840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40787841600).

18068883840 is an abundant number, since it is smaller than the sum of its proper divisors (63506799360).

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

18068883840 is a wasteful number, since it uses less digits than its factorization.

18068883840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185 (or 164 counting only the distinct ones).

The product of its (nonzero) digits is 2359296, while the sum is 54.

The spelling of 18068883840 in words is "eighteen billion, sixty-eight million, eight hundred eighty-three thousand, eight hundred forty".