18117126 has 12 divisors (see below), whose sum is σ = 39253812. Its totient is φ = 6039036.

The previous prime is 18117119. The next prime is 18117167. The reversal of 18117126 is 62171181.

It is a super-3 number, since 3×18117126³ (a number of 23 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 18117126.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 503236 + ... + 503271.

It is an arithmetic number, because the mean of its divisors is an integer number (3271151).

Almost surely, 2^18117126 is an apocalyptic number.

18117126 is an abundant number, since it is smaller than the sum of its proper divisors (21136686).

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

18117126 is a wasteful number, since it uses less digits than its factorization.

18117126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006515 (or 1006512 counting only the distinct ones).

The product of its digits is 672, while the sum is 27.

The square root of 18117126 is about 4256.4217366234. The cubic root of 18117126 is about 262.6413497234.

The spelling of 18117126 in words is "eighteen million, one hundred seventeen thousand, one hundred twenty-six".