18349617384 has 192 divisors, whose sum is σ = 61177459200. Its totient is φ = 4851197568.

The previous prime is 18349617367. The next prime is 18349617397. The reversal of 18349617384 is 48371694381.

18349617384 is a `hidden beast` number, since 1 + 8 + 3 + 496 + 1 + 73 + 84 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 18349617384.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 389487 + ... + 434049.

It is an arithmetic number, because the mean of its divisors is an integer number (318632600).

Almost surely, 2^18349617384 is an apocalyptic number.

18349617384 is a gapful number since it is divisible by the number (14) 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 18349617384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30588729600).

18349617384 is an abundant number, since it is smaller than the sum of its proper divisors (42827841816).

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

18349617384 is a wasteful number, since it uses less digits than its factorization.

18349617384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44644 (or 44637 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The spelling of 18349617384 in words is "eighteen billion, three hundred forty-nine million, six hundred seventeen thousand, three hundred eighty-four".