18934560000 has 540 divisors, whose sum is σ = 70891332512. Its totient is φ = 5038848000.

The previous prime is 18934559993. The next prime is 18934560041. The reversal of 18934560000 is 6543981.

18934560000 is a `hidden beast` number, since 1 + 8 + 9 + 3 + 45 + 600 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (540).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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 59 ways as a sum of consecutive naturals, for example, 38879757 + ... + 38880243.

Almost surely, 2^18934560000 is an apocalyptic number.

18934560000 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 18934560000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35445666256).

18934560000 is an abundant number, since it is smaller than the sum of its proper divisors (51956772512).

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

18934560000 is an frugal number, since it uses more digits than its factorization.

18934560000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538 (or 497 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 18934560000 in words is "eighteen billion, nine hundred thirty-four million, five hundred sixty thousand".