18943056 has 60 divisors (see below), whose sum is σ = 57838560. Its totient is φ = 5739840.

The previous prime is 18943037. The next prime is 18943079. The reversal of 18943056 is 65034981.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 18943056.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 4396 + ... + 7563.

It is an arithmetic number, because the mean of its divisors is an integer number (963976).

Almost surely, 2^18943056 is an apocalyptic number.

18943056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18943056 is an abundant number, since it is smaller than the sum of its proper divisors (38895504).

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

18943056 is a wasteful number, since it uses less digits than its factorization.

18943056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11984 (or 11975 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 18943056 is about 4352.3621172876. The cubic root of 18943056 is about 266.5733201057.

It can be divided in two parts, 1894 and 3056, that added together give a triangular number (4950 = T₉₉).

The spelling of 18943056 in words is "eighteen million, nine hundred forty-three thousand, fifty-six".