18883144456 has 64 divisors (see below), whose sum is σ = 39002886720. Its totient is φ = 8499582720.

The previous prime is 18883144409. The next prime is 18883144481. The reversal of 18883144456 is 65444138881.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

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, 4200546 + ... + 4205038.

It is an arithmetic number, because the mean of its divisors is an integer number (609420105).

Almost surely, 2^18883144456 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 18883144456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19501443360).

18883144456 is an abundant number, since it is smaller than the sum of its proper divisors (20119742264).

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

18883144456 is a wasteful number, since it uses less digits than its factorization.

18883144456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4966 (or 4962 counting only the distinct ones).

The product of its digits is 2949120, while the sum is 52.

The spelling of 18883144456 in words is "eighteen billion, eight hundred eighty-three million, one hundred forty-four thousand, four hundred fifty-six".