1818768384 has 176 divisors, whose sum is σ = 5433556800. Its totient is φ = 600956928.

The previous prime is 1818768373. The next prime is 1818768403. The reversal of 1818768384 is 4838678181.

It is a happy number.

1818768384 is a `hidden beast` number, since 181 + 87 + 6 + 8 + 384 = 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 1818768384.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4340527 + ... + 4340945.

Almost surely, 2^1818768384 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 1818768384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2716778400).

1818768384 is an abundant number, since it is smaller than the sum of its proper divisors (3614788416).

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

1818768384 is a wasteful number, since it uses less digits than its factorization.

1818768384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605 (or 581 counting only the distinct ones).

The product of its digits is 2064384, while the sum is 54.

The square root of 1818768384 is about 42647.0208103685. The cubic root of 1818768384 is about 1220.6536817619.

The spelling of 1818768384 in words is "one billion, eight hundred eighteen million, seven hundred sixty-eight thousand, three hundred eighty-four".