18037836 has 24 divisors (see below), whose sum is σ = 46765040. Its totient is φ = 6012576.

The previous prime is 18037823. The next prime is 18037841. The reversal of 18037836 is 63873081.

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

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 18037836.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 83401 + ... + 83616.

Almost surely, 2^18037836 is an apocalyptic number.

It is an amenable number.

18037836 is an abundant number, since it is smaller than the sum of its proper divisors (28727204).

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

18037836 is a wasteful number, since it uses less digits than its factorization.

18037836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167030 (or 167022 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 18037836 is about 4247.0973617284. The cubic root of 18037836 is about 262.2576375236.

The spelling of 18037836 in words is "eighteen million, thirty-seven thousand, eight hundred thirty-six".