18587814144 has 216 divisors, whose sum is σ = 53237778720. Its totient is φ = 5755502592.

The previous prime is 18587814139. The next prime is 18587814151. The reversal of 18587814144 is 44141878581.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18421512 + ... + 18422520.

Almost surely, 2^18587814144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18587814144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26618889360).

18587814144 is an abundant number, since it is smaller than the sum of its proper divisors (34649964576).

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

18587814144 is a wasteful number, since it uses less digits than its factorization.

18587814144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1145 (or 1114 counting only the distinct ones).

The product of its digits is 1146880, while the sum is 51.

The spelling of 18587814144 in words is "eighteen billion, five hundred eighty-seven million, eight hundred fourteen thousand, one hundred forty-four".