18252118 has 16 divisors (see below), whose sum is σ = 29925504. Its totient is φ = 8311680.

The previous prime is 18252109. The next prime is 18252131. The reversal of 18252118 is 81125281.

It is a super-2 number, since 2×18252118² = 666279622971848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7605 + ... + 9712.

It is an arithmetic number, because the mean of its divisors is an integer number (1870344).

Almost surely, 2^18252118 is an apocalyptic number.

18252118 is a deficient number, since it is larger than the sum of its proper divisors (11673386).

18252118 is a wasteful number, since it uses less digits than its factorization.

18252118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17367.

The product of its digits is 1280, while the sum is 28.

The square root of 18252118 is about 4272.2497586166. The cubic root of 18252118 is about 263.2920560558.

Adding to 18252118 its reverse (81125281), we get a palindrome (99377399).

The spelling of 18252118 in words is "eighteen million, two hundred fifty-two thousand, one hundred eighteen".