18786036 has 24 divisors (see below), whose sum is σ = 44904384. Its totient is φ = 6109120.

The previous prime is 18786023. The next prime is 18786059. The reversal of 18786036 is 63068781.

It is a junction number, because it is equal to n+sod(n) for n = 18785985 and 18786003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18600 + ... + 19583.

It is an arithmetic number, because the mean of its divisors is an integer number (1871016).

Almost surely, 2^18786036 is an apocalyptic number.

It is an amenable number.

18786036 is an abundant number, since it is smaller than the sum of its proper divisors (26118348).

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

18786036 is a wasteful number, since it uses less digits than its factorization.

18786036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38231 (or 38229 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 18786036 is about 4334.2861003861. The cubic root of 18786036 is about 265.8347287744.

The spelling of 18786036 in words is "eighteen million, seven hundred eighty-six thousand, thirty-six".