18243026 has 8 divisors (see below), whose sum is σ = 27813324. Its totient is φ = 8971920.

The previous prime is 18243019. The next prime is 18243037. The reversal of 18243026 is 62034281.

It can be written as a sum of positive squares in 2 ways, for example, as 17682025 + 561001 = 4205^2 + 749^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 18242986 and 18243004.

It is an unprimeable number.

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, 74645 + ... + 74888.

Almost surely, 2^18243026 is an apocalyptic number.

18243026 is a deficient number, since it is larger than the sum of its proper divisors (9570298).

18243026 is a wasteful number, since it uses less digits than its factorization.

18243026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149596.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 18243026 is about 4271.1855497040. The cubic root of 18243026 is about 263.2483305555.

The spelling of 18243026 in words is "eighteen million, two hundred forty-three thousand, twenty-six".