18444852 has 36 divisors (see below), whose sum is σ = 46773636. Its totient is φ = 6128640.

The previous prime is 18444851. The next prime is 18444887. The reversal of 18444852 is 25844481.

It can be written as a sum of positive squares in 2 ways, for example, as 2090916 + 16353936 = 1446^2 + 4044^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18444851) 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 11 ways as a sum of consecutive naturals, for example, 14548 + ... + 15764.

Almost surely, 2^18444852 is an apocalyptic number.

18444852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18444852 is an abundant number, since it is smaller than the sum of its proper divisors (28328784).

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

18444852 is a wasteful number, since it uses less digits than its factorization.

18444852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1648 (or 1643 counting only the distinct ones).

The product of its digits is 40960, while the sum is 36.

The square root of 18444852 is about 4294.7470239817. The cubic root of 18444852 is about 264.2155608573.

The spelling of 18444852 in words is "eighteen million, four hundred forty-four thousand, eight hundred fifty-two".