18806616 has 48 divisors (see below), whose sum is σ = 52696800. Its totient is φ = 6052032.

The previous prime is 18806611. The next prime is 18806621. The reversal of 18806616 is 61660881.

It is an interprime number because it is at equal distance from previous prime (18806611) and next prime (18806621).

It is a Harshad number since it is a multiple of its sum of digits (36).

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 11 ways as a sum of consecutive naturals, for example, 2416 + ... + 6591.

It is an arithmetic number, because the mean of its divisors is an integer number (1097850).

Almost surely, 2^18806616 is an apocalyptic number.

It is an amenable number.

18806616 is an abundant number, since it is smaller than the sum of its proper divisors (33890184).

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

18806616 is a wasteful number, since it uses less digits than its factorization.

18806616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9048 (or 9041 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 18806616 is about 4336.6595439347. The cubic root of 18806616 is about 265.9317668467.

The spelling of 18806616 in words is "eighteen million, eight hundred six thousand, six hundred sixteen".