18806612 has 12 divisors (see below), whose sum is σ = 35903616. Its totient is φ = 8548440.

The previous prime is 18806611. The next prime is 18806621. The reversal of 18806612 is 21660881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18806611) 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, 213668 + ... + 213755.

It is an arithmetic number, because the mean of its divisors is an integer number (2991968).

Almost surely, 2^18806612 is an apocalyptic number.

It is an amenable number.

18806612 is a deficient number, since it is larger than the sum of its proper divisors (17097004).

18806612 is a wasteful number, since it uses less digits than its factorization.

18806612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427438 (or 427436 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 18806612 is about 4336.6590827502. The cubic root of 18806612 is about 265.9317479929.

The spelling of 18806612 in words is "eighteen million, eight hundred six thousand, six hundred twelve".