18829844 has 12 divisors (see below), whose sum is σ = 35947968. Its totient is φ = 8559000.

The previous prime is 18829843. The next prime is 18829861. The reversal of 18829844 is 44892881.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 427951 = 18829844 / (1 + 8 + 8 + 2 + 9 + 8 + 4 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 18829795 and 18829804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18829841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213932 + ... + 214019.

It is an arithmetic number, because the mean of its divisors is an integer number (2995664).

Almost surely, 2^18829844 is an apocalyptic number.

It is an amenable number.

18829844 is a deficient number, since it is larger than the sum of its proper divisors (17118124).

18829844 is a wasteful number, since it uses less digits than its factorization.

18829844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427966 (or 427964 counting only the distinct ones).

The product of its digits is 147456, while the sum is 44.

The square root of 18829844 is about 4339.3368156897. The cubic root of 18829844 is about 266.0412056692.

The spelling of 18829844 in words is "eighteen million, eight hundred twenty-nine thousand, eight hundred forty-four".