18445836 has 12 divisors (see below), whose sum is σ = 43040312. Its totient is φ = 6148608.

The previous prime is 18445829. The next prime is 18445841. The reversal of 18445836 is 63854481.

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

It is a junction number, because it is equal to n+sod(n) for n = 18445794 and 18445803.

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 3 ways as a sum of consecutive naturals, for example, 768565 + ... + 768588.

Almost surely, 2^18445836 is an apocalyptic number.

It is an amenable number.

18445836 is an abundant number, since it is smaller than the sum of its proper divisors (24594476).

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

18445836 is a wasteful number, since it uses less digits than its factorization.

18445836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1537160 (or 1537158 counting only the distinct ones).

The product of its digits is 92160, while the sum is 39.

The square root of 18445836 is about 4294.8615810058. The cubic root of 18445836 is about 264.2202592503.

The spelling of 18445836 in words is "eighteen million, four hundred forty-five thousand, eight hundred thirty-six".