18535012 has 6 divisors (see below), whose sum is σ = 32436278. Its totient is φ = 9267504.

The previous prime is 18535009. The next prime is 18535037. The reversal of 18535012 is 21053581.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 15792676 + 2742336 = 3974^2 + 1656^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2316873 + ... + 2316880.

Almost surely, 2^18535012 is an apocalyptic number.

It is an amenable number.

18535012 is a deficient number, since it is larger than the sum of its proper divisors (13901266).

18535012 is a wasteful number, since it uses less digits than its factorization.

18535012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4633757 (or 4633755 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 18535012 is about 4305.2307719796. The cubic root of 18535012 is about 264.6453639971.

Adding to 18535012 its reverse (21053581), we get a palindrome (39588593).

Subtracting 18535012 from its reverse (21053581), we obtain a square (2518569 = 1587²).

The spelling of 18535012 in words is "eighteen million, five hundred thirty-five thousand, twelve".