18494212 has 12 divisors (see below), whose sum is σ = 35307216. Its totient is φ = 8406440.

The previous prime is 18494183. The next prime is 18494213. The reversal of 18494212 is 21249481.

It is not an unprimeable number, because it can be changed into a prime (18494213) 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, 210118 + ... + 210205.

It is an arithmetic number, because the mean of its divisors is an integer number (2942268).

Almost surely, 2^18494212 is an apocalyptic number.

It is an amenable number.

18494212 is a deficient number, since it is larger than the sum of its proper divisors (16813004).

18494212 is a wasteful number, since it uses less digits than its factorization.

18494212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420338 (or 420336 counting only the distinct ones).

The product of its digits is 4608, while the sum is 31.

The square root of 18494212 is about 4300.4897395529. The cubic root of 18494212 is about 264.4510387348.

The spelling of 18494212 in words is "eighteen million, four hundred ninety-four thousand, two hundred twelve".