18844368 has 40 divisors (see below), whose sum is σ = 49723008. Its totient is φ = 6147072.

The previous prime is 18844361. The next prime is 18844391. The reversal of 18844368 is 86344881.

It is a super-2 number, since 2×18844368² = 710220410638848, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18844361) 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, 1921 + ... + 6432.

Almost surely, 2^18844368 is an apocalyptic number.

It is an amenable number.

18844368 is an abundant number, since it is smaller than the sum of its proper divisors (30878640).

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

18844368 is a wasteful number, since it uses less digits than its factorization.

18844368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8411 (or 8405 counting only the distinct ones).

The product of its digits is 147456, while the sum is 42.

The square root of 18844368 is about 4341.0100207210. The cubic root of 18844368 is about 266.1095898334.

The spelling of 18844368 in words is "eighteen million, eight hundred forty-four thousand, three hundred sixty-eight".