18216846 has 16 divisors (see below), whose sum is σ = 40482000. Its totient is φ = 6072264.

The previous prime is 18216823. The next prime is 18216853. The reversal of 18216846 is 64861281.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18216846.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168621 + ... + 168728.

It is an arithmetic number, because the mean of its divisors is an integer number (2530125).

Almost surely, 2^18216846 is an apocalyptic number.

18216846 is an abundant number, since it is smaller than the sum of its proper divisors (22265154).

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

18216846 is a wasteful number, since it uses less digits than its factorization.

18216846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337360 (or 337354 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 18216846 is about 4268.1197265306. The cubic root of 18216846 is about 263.1223437687.

The spelling of 18216846 in words is "eighteen million, two hundred sixteen thousand, eight hundred forty-six".