18986612 has 12 divisors (see below), whose sum is σ = 33289536. Its totient is φ = 9475320.

The previous prime is 18986593. The next prime is 18986621. The reversal of 18986612 is 21668981.

It is a self number, because there is not a number n which added to its sum of digits gives 18986612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1964 + ... + 6467.

It is an arithmetic number, because the mean of its divisors is an integer number (2774128).

Almost surely, 2^18986612 is an apocalyptic number.

It is an amenable number.

18986612 is a deficient number, since it is larger than the sum of its proper divisors (14302924).

18986612 is a wasteful number, since it uses less digits than its factorization.

18986612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8998 (or 8996 counting only the distinct ones).

The product of its digits is 41472, while the sum is 41.

The square root of 18986612 is about 4357.3629639955. The cubic root of 18986612 is about 266.7774754767. Note that the first 3 decimals are identical.

The spelling of 18986612 in words is "eighteen million, nine hundred eighty-six thousand, six hundred twelve".