18699086 has 12 divisors (see below), whose sum is σ = 32628168. Its totient is φ = 8013852.

The previous prime is 18699077. The next prime is 18699103. The reversal of 18699086 is 68099681.

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 18699086.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 95306 + ... + 95501.

It is an arithmetic number, because the mean of its divisors is an integer number (2719014).

Almost surely, 2^18699086 is an apocalyptic number.

18699086 is a deficient number, since it is larger than the sum of its proper divisors (13929082).

18699086 is a wasteful number, since it uses less digits than its factorization.

18699086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190823 (or 190816 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 47.

The square root of 18699086 is about 4324.2439801658. The cubic root of 18699086 is about 265.4239612105.

The spelling of 18699086 in words is "eighteen million, six hundred ninety-nine thousand, eighty-six".