18665094384 has 140 divisors (see below), whose sum is σ = 54502567416. Its totient is φ = 6189353856.

The previous prime is 18665094379. The next prime is 18665094397. The reversal of 18665094384 is 48349056681.

18665094384 is a `hidden beast` number, since 18 + 6 + 6 + 509 + 43 + 84 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 18665094384.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 2293747 + ... + 2301869.

Almost surely, 2^18665094384 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 18665094384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27251283708).

18665094384 is an abundant number, since it is smaller than the sum of its proper divisors (35837473032).

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

18665094384 is an equidigital number, since it uses as much as digits as its factorization.

18665094384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8346 (or 8325 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 54.

The spelling of 18665094384 in words is "eighteen billion, six hundred sixty-five million, ninety-four thousand, three hundred eighty-four".