18635996 has 12 divisors (see below), whose sum is σ = 32930352. Its totient is φ = 9227328.

The previous prime is 18635987. The next prime is 18635999. The reversal of 18635996 is 69953681.

It is a self number, because there is not a number n which added to its sum of digits gives 18635996.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18635999) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 22205 + ... + 23028.

It is an arithmetic number, because the mean of its divisors is an integer number (2744196).

Almost surely, 2^18635996 is an apocalyptic number.

It is an amenable number.

18635996 is a deficient number, since it is larger than the sum of its proper divisors (14294356).

18635996 is a wasteful number, since it uses less digits than its factorization.

18635996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45340 (or 45338 counting only the distinct ones).

The product of its digits is 349920, while the sum is 47.

The square root of 18635996 is about 4316.9428997845. The cubic root of 18635996 is about 265.1251147661.

The spelling of 18635996 in words is "eighteen million, six hundred thirty-five thousand, nine hundred ninety-six".