18520488000 has 672 divisors, whose sum is σ = 78577244928. Its totient is φ = 4230144000.

The previous prime is 18520487987. The next prime is 18520488037. The reversal of 18520488000 is 88402581.

18520488000 is a `hidden beast` number, since 18 + 520 + 48 + 80 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

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

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 13607320 + ... + 13608680.

It is an arithmetic number, because the mean of its divisors is an integer number (116930424).

Almost surely, 2^18520488000 is an apocalyptic number.

18520488000 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 18520488000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39288622464).

18520488000 is an abundant number, since it is smaller than the sum of its proper divisors (60056756928).

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

18520488000 is an equidigital number, since it uses as much as digits as its factorization.

18520488000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1410 (or 1378 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The spelling of 18520488000 in words is "eighteen billion, five hundred twenty million, four hundred eighty-eight thousand".