18738016 has 24 divisors (see below), whose sum is σ = 40244904. Its totient is φ = 8517120.

The previous prime is 18738011. The next prime is 18738017. The reversal of 18738016 is 61083781.

It is a super-2 number, since 2×18738016² = 702226487232512, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18738011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26265 + ... + 26968.

It is an arithmetic number, because the mean of its divisors is an integer number (1676871).

Almost surely, 2^18738016 is an apocalyptic number.

18738016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18738016 is an abundant number, since it is smaller than the sum of its proper divisors (21506888).

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

18738016 is a wasteful number, since it uses less digits than its factorization.

18738016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53254 (or 53246 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 18738016 is about 4328.7430046146. The cubic root of 18738016 is about 265.6080306760.

It can be divided in two parts, 1873 and 8016, that added together give a palindrome (9889).

The spelling of 18738016 in words is "eighteen million, seven hundred thirty-eight thousand, sixteen".