18026118 has 32 divisors (see below), whose sum is σ = 43701120. Its totient is φ = 5462280.

The previous prime is 18026087. The next prime is 18026123. The reversal of 18026118 is 81162081.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 18026091 and 18026100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14580 + ... + 15767.

It is an arithmetic number, because the mean of its divisors is an integer number (1365660).

Almost surely, 2^18026118 is an apocalyptic number.

18026118 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

18026118 is an abundant number, since it is smaller than the sum of its proper divisors (25675002).

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

18026118 is a wasteful number, since it uses less digits than its factorization.

18026118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30369 (or 30363 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 27.

The square root of 18026118 is about 4245.7176071896. The cubic root of 18026118 is about 262.2008346878.

Adding to 18026118 its reverse (81162081), we get a palindrome (99188199).

The spelling of 18026118 in words is "eighteen million, twenty-six thousand, one hundred eighteen".