18549780480 has 624 divisors, whose sum is σ = 80225144064. Its totient is φ = 3851550720.

The previous prime is 18549780467. The next prime is 18549780499. The reversal of 18549780480 is 8408794581.

18549780480 is a `hidden beast` number, since 1 + 85 + 4 + 9 + 7 + 80 + 480 = 666.

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 47 ways as a sum of consecutive naturals, for example, 14191987 + ... + 14193293.

It is an arithmetic number, because the mean of its divisors is an integer number (128565936).

Almost surely, 2^18549780480 is an apocalyptic number.

18549780480 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 18549780480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40112572032).

18549780480 is an abundant number, since it is smaller than the sum of its proper divisors (61675363584).

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

18549780480 is a wasteful number, since it uses less digits than its factorization.

18549780480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360 (or 1335 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 54.

The spelling of 18549780480 in words is "eighteen billion, five hundred forty-nine million, seven hundred eighty thousand, four hundred eighty".