18436536 has 48 divisors (see below), whose sum is σ = 52564200. Its totient is φ = 5821632.

The previous prime is 18436531. The next prime is 18436573. The reversal of 18436536 is 63563481.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 18436536.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18436531) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 5371 + ... + 8106.

Almost surely, 2^18436536 is an apocalyptic number.

It is an amenable number.

18436536 is an abundant number, since it is smaller than the sum of its proper divisors (34127664).

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

18436536 is a wasteful number, since it uses less digits than its factorization.

18436536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13508 (or 13501 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 18436536 is about 4293.7787553622. The cubic root of 18436536 is about 264.1758470319.

The spelling of 18436536 in words is "eighteen million, four hundred thirty-six thousand, five hundred thirty-six".