18850518720 has 448 divisors, whose sum is σ = 72935470080. Its totient is φ = 4545331200.

The previous prime is 18850518707. The next prime is 18850518763. The reversal of 18850518720 is 2781505881.

18850518720 is a `hidden beast` number, since 1 + 88 + 50 + 518 + 7 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 22904229 + ... + 22905051.

Almost surely, 2^18850518720 is an apocalyptic number.

18850518720 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 18850518720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36467735040).

18850518720 is an abundant number, since it is smaller than the sum of its proper divisors (54084951360).

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

18850518720 is a wasteful number, since it uses less digits than its factorization.

18850518720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1101 (or 1085 counting only the distinct ones).

The product of its (nonzero) digits is 179200, while the sum is 45.

The spelling of 18850518720 in words is "eighteen billion, eight hundred fifty million, five hundred eighteen thousand, seven hundred twenty".