18126243 has 6 divisors (see below), whose sum is σ = 26182364. Its totient is φ = 12084156.

The previous prime is 18126221. The next prime is 18126271. The reversal of 18126243 is 34262181.

It is not a de Polignac number, because 18126243 - 2⁶ = 18126179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18126203) 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 5 ways as a sum of consecutive naturals, for example, 1007005 + ... + 1007022.

Almost surely, 2^18126243 is an apocalyptic number.

18126243 is a deficient number, since it is larger than the sum of its proper divisors (8056121).

18126243 is a wasteful number, since it uses less digits than its factorization.

18126243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2014033 (or 2014030 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 18126243 is about 4257.4925719254. The cubic root of 18126243 is about 262.6853982779.

The spelling of 18126243 in words is "eighteen million, one hundred twenty-six thousand, two hundred forty-three".