18419952384 has 108 divisors (see below), whose sum is σ = 53307045792. Its totient is φ = 6117120000.

The previous prime is 18419952361. The next prime is 18419952389. The reversal of 18419952384 is 48325991481.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18419952384.

It is not an unprimeable number, because it can be changed into a prime (18419952389) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 609634 + ... + 639134.

Almost surely, 2^18419952384 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 18419952384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26653522896).

18419952384 is an abundant number, since it is smaller than the sum of its proper divisors (34887093408).

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

18419952384 is a wasteful number, since it uses less digits than its factorization.

18419952384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29794 (or 29777 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 54.

The spelling of 18419952384 in words is "eighteen billion, four hundred nineteen million, nine hundred fifty-two thousand, three hundred eighty-four".