18410218 has 16 divisors (see below), whose sum is σ = 30184704. Its totient is φ = 8383680.

The previous prime is 18410213. The next prime is 18410219. The reversal of 18410218 is 81201481.

It is a super-2 number, since 2×18410218² = 677872253615048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18410192 and 18410201.

It is not an unprimeable number, because it can be changed into a prime (18410213) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7680 + ... + 9787.

It is an arithmetic number, because the mean of its divisors is an integer number (1886544).

Almost surely, 2^18410218 is an apocalyptic number.

18410218 is a deficient number, since it is larger than the sum of its proper divisors (11774486).

18410218 is a wasteful number, since it uses less digits than its factorization.

18410218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17517.

The product of its (nonzero) digits is 512, while the sum is 25.

The square root of 18410218 is about 4290.7129943635. The cubic root of 18410218 is about 264.0500842382.

Adding to 18410218 its reverse (81201481), we get a palindrome (99611699).

The spelling of 18410218 in words is "eighteen million, four hundred ten thousand, two hundred eighteen".