18034218 has 32 divisors (see below), whose sum is σ = 40235520. Its totient is φ = 5987520.

The previous prime is 18034217. The next prime is 18034241. The reversal of 18034218 is 81243081.

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 = 18034191 and 18034200.

It is not an unprimeable number, because it can be changed into a prime (18034217) 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 15 ways as a sum of consecutive naturals, for example, 17703 + ... + 18693.

It is an arithmetic number, because the mean of its divisors is an integer number (1257360).

Almost surely, 2^18034218 is an apocalyptic number.

18034218 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

18034218 is an abundant number, since it is smaller than the sum of its proper divisors (22201302).

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

18034218 is a wasteful number, since it uses less digits than its factorization.

18034218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1339 (or 1333 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 18034218 is about 4246.6714024045. The cubic root of 18034218 is about 262.2401019467.

Adding to 18034218 its reverse (81243081), we get a palindrome (99277299).

The spelling of 18034218 in words is "eighteen million, thirty-four thousand, two hundred eighteen".