18124938 has 32 divisors (see below), whose sum is σ = 43377600. Its totient is φ = 5576688.

The previous prime is 18124937. The next prime is 18124949. The reversal of 18124938 is 83942181.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18124937) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12208 + ... + 13611.

It is an arithmetic number, because the mean of its divisors is an integer number (1355550).

Almost surely, 2^18124938 is an apocalyptic number.

18124938 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

18124938 is an abundant number, since it is smaller than the sum of its proper divisors (25252662).

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

18124938 is a wasteful number, since it uses less digits than its factorization.

18124938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25843 (or 25837 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 18124938 is about 4257.3393099447. The cubic root of 18124938 is about 262.6790941094.

The spelling of 18124938 in words is "eighteen million, one hundred twenty-four thousand, nine hundred thirty-eight".