18983448 has 72 divisors (see below), whose sum is σ = 56538300. Its totient is φ = 5749920.

The previous prime is 18983423. The next prime is 18983467. The reversal of 18983448 is 84438981.

It is a Cunningham number, because it is equal to 4357²-1.

It is a tau number, because it is divible by the number of its divisors (72).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7623 + ... + 9801.

Almost surely, 2^18983448 is an apocalyptic number.

18983448 is a gapful number since it is divisible by the number (18) 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 18983448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28269150).

18983448 is an abundant number, since it is smaller than the sum of its proper divisors (37554852).

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

18983448 is a wasteful number, since it uses less digits than its factorization.

18983448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2213 (or 2195 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 18983448 is about 4356.9998852421. Note that the first 3 decimals coincide. The cubic root of 18983448 is about 266.7626557215.

The spelling of 18983448 in words is "eighteen million, nine hundred eighty-three thousand, four hundred forty-eight".