18789484 has 24 divisors (see below), whose sum is σ = 37705248. Its totient is φ = 8025600.

The previous prime is 18789481. The next prime is 18789557. The reversal of 18789484 is 48498781.

It is not an unprimeable number, because it can be changed into a prime (18789481) 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 7 ways as a sum of consecutive naturals, for example, 8934 + ... + 10834.

It is an arithmetic number, because the mean of its divisors is an integer number (1571052).

Almost surely, 2^18789484 is an apocalyptic number.

18789484 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18789484 is an abundant number, since it is smaller than the sum of its proper divisors (18915764).

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

18789484 is a wasteful number, since it uses less digits than its factorization.

18789484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2265 (or 2263 counting only the distinct ones).

The product of its digits is 516096, while the sum is 49.

The square root of 18789484 is about 4334.6838408355. The cubic root of 18789484 is about 265.8509915998.

The spelling of 18789484 in words is "eighteen million, seven hundred eighty-nine thousand, four hundred eighty-four".