18289000450 has 48 divisors (see below), whose sum is σ = 38891778624. Its totient is φ = 6268161600.

The previous prime is 18289000417. The next prime is 18289000453. The reversal of 18289000450 is 5400098281.

It is not an unprimeable number, because it can be changed into a prime (18289000453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1105137 + ... + 1121563.

It is an arithmetic number, because the mean of its divisors is an integer number (810245388).

Almost surely, 2^18289000450 is an apocalyptic number.

18289000450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18289000450 is an abundant number, since it is smaller than the sum of its proper divisors (20602778174).

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

18289000450 is a wasteful number, since it uses less digits than its factorization.

18289000450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19627 (or 19622 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 37.

The spelling of 18289000450 in words is "eighteen billion, two hundred eighty-nine million, four hundred fifty", and thus it is an aban number.