18635012 has 48 divisors (see below), whose sum is σ = 37122624. Its totient is φ = 8112000.

The previous prime is 18635011. The next prime is 18635027. The reversal of 18635012 is 21053681.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (18635011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142187 + ... + 142317.

It is an arithmetic number, because the mean of its divisors is an integer number (773388).

Almost surely, 2^18635012 is an apocalyptic number.

It is an amenable number.

18635012 is a deficient number, since it is larger than the sum of its proper divisors (18487612).

18635012 is a wasteful number, since it uses less digits than its factorization.

18635012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260 (or 258 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 18635012 is about 4316.8289287392. The cubic root of 18635012 is about 265.1204483899.

Adding to 18635012 its reverse (21053681), we get a palindrome (39688693).

The spelling of 18635012 in words is "eighteen million, six hundred thirty-five thousand, twelve".