18184284380 has 48 divisors (see below), whose sum is σ = 39909542400. Its totient is φ = 6946598208.

The previous prime is 18184284367. The next prime is 18184284409. The reversal of 18184284380 is 8348248181.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 267071 + ... + 328169.

It is an arithmetic number, because the mean of its divisors is an integer number (831448800).

Almost surely, 2^18184284380 is an apocalyptic number.

18184284380 is a gapful number since it is divisible by the number (10) 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 18184284380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19954771200).

18184284380 is an abundant number, since it is smaller than the sum of its proper divisors (21725258020).

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

18184284380 is a wasteful number, since it uses less digits than its factorization.

18184284380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61778 (or 61776 counting only the distinct ones).

The product of its (nonzero) digits is 393216, while the sum is 47.

The spelling of 18184284380 in words is "eighteen billion, one hundred eighty-four million, two hundred eighty-four thousand, three hundred eighty".