18162212 has 12 divisors (see below), whose sum is σ = 31825920. Its totient is φ = 9069096.

The previous prime is 18162173. The next prime is 18162217. The reversal of 18162212 is 21226181.

It is not an unprimeable number, because it can be changed into a prime (18162217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 989 + ... + 6107.

It is an arithmetic number, because the mean of its divisors is an integer number (2652160).

Almost surely, 2^18162212 is an apocalyptic number.

It is an amenable number.

18162212 is a deficient number, since it is larger than the sum of its proper divisors (13663708).

18162212 is a wasteful number, since it uses less digits than its factorization.

18162212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6010 (or 6008 counting only the distinct ones).

The product of its digits is 384, while the sum is 23.

The square root of 18162212 is about 4261.7146783894. The cubic root of 18162212 is about 262.8590376472.

Adding to 18162212 its reverse (21226181), we get a palindrome (39388393).

The spelling of 18162212 in words is "eighteen million, one hundred sixty-two thousand, two hundred twelve".