18844044 has 24 divisors (see below), whose sum is σ = 44800560. Its totient is φ = 6162624.

The previous prime is 18844043. The next prime is 18844057. The reversal of 18844044 is 44044881.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 18843996 and 18844014.

It is not an unprimeable number, because it can be changed into a prime (18844043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14179 + ... + 15450.

It is an arithmetic number, because the mean of its divisors is an integer number (1866690).

Almost surely, 2^18844044 is an apocalyptic number.

It is an amenable number.

18844044 is an abundant number, since it is smaller than the sum of its proper divisors (25956516).

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

18844044 is a wasteful number, since it uses less digits than its factorization.

18844044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29689 (or 29687 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 33.

The square root of 18844044 is about 4340.9727020565. The cubic root of 18844044 is about 266.1080647093.

The spelling of 18844044 in words is "eighteen million, eight hundred forty-four thousand, forty-four".