18943848 has 256 divisors, whose sum is σ = 70502400. Its totient is φ = 4561920.

The previous prime is 18943829. The next prime is 18943849. The reversal of 18943848 is 84834981.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (18943849) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 282711 + ... + 282777.

It is an arithmetic number, because the mean of its divisors is an integer number (275400).

Almost surely, 2^18943848 is an apocalyptic number.

18943848 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 18943848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35251200).

18943848 is an abundant number, since it is smaller than the sum of its proper divisors (51558552).

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

18943848 is a wasteful number, since it uses less digits than its factorization.

18943848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117 (or 107 counting only the distinct ones).

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

The square root of 18943848 is about 4352.4531014130. The cubic root of 18943848 is about 266.5770351544.

It can be divided in two parts, 18943 and 848, that added together give a palindrome (19791).

The spelling of 18943848 in words is "eighteen million, nine hundred forty-three thousand, eight hundred forty-eight".