18114636 has 12 divisors (see below), whose sum is σ = 42267512. Its totient is φ = 6038208.

The previous prime is 18114623. The next prime is 18114641. The reversal of 18114636 is 63641181.

It is a tau number, because it is divible by the number of its divisors (12).

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, 754765 + ... + 754788.

Almost surely, 2^18114636 is an apocalyptic number.

It is an amenable number.

18114636 is an abundant number, since it is smaller than the sum of its proper divisors (24152876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18114636 is a wasteful number, since it uses less digits than its factorization.

18114636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1509560 (or 1509558 counting only the distinct ones).

The product of its digits is 3456, while the sum is 30.

The square root of 18114636 is about 4256.1292273614. The cubic root of 18114636 is about 262.6293167824.

It can be divided in two parts, 181146 and 36, that multiplied together give a palindrome (6521256).

The spelling of 18114636 in words is "eighteen million, one hundred fourteen thousand, six hundred thirty-six".