18783044 has 12 divisors (see below), whose sum is σ = 37566144. Its totient is φ = 8049864.

The previous prime is 18783031. The next prime is 18783047. The reversal of 18783044 is 44038781.

It is a happy number.

18783044 is an admirable number.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 18782995 and 18783013.

It is not an unprimeable number, because it can be changed into a prime (18783047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 335384 + ... + 335439.

It is an arithmetic number, because the mean of its divisors is an integer number (3130512).

Almost surely, 2^18783044 is an apocalyptic number.

18783044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18783044 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.

18783044 is a wasteful number, since it uses less digits than its factorization.

18783044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670834 (or 670832 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 18783044 is about 4333.9409317618. The cubic root of 18783044 is about 265.8206151044.

The spelling of 18783044 in words is "eighteen million, seven hundred eighty-three thousand, forty-four".