18838484 has 12 divisors (see below), whose sum is σ = 37677024. Its totient is φ = 8073624.

The previous prime is 18838451. The next prime is 18838529. The reversal of 18838484 is 48483881.

18838484 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336374 + ... + 336429.

It is an arithmetic number, because the mean of its divisors is an integer number (3139752).

Almost surely, 2^18838484 is an apocalyptic number.

18838484 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18838484 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18838484 is a wasteful number, since it uses less digits than its factorization.

18838484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672814 (or 672812 counting only the distinct ones).

The product of its digits is 196608, while the sum is 44.

The square root of 18838484 is about 4340.3322453471. The cubic root of 18838484 is about 266.0818901015.

The spelling of 18838484 in words is "eighteen million, eight hundred thirty-eight thousand, four hundred eighty-four".