18986124 has 12 divisors (see below), whose sum is σ = 44300984. Its totient is φ = 6328704.

The previous prime is 18986117. The next prime is 18986129. The reversal of 18986124 is 42168981.

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

It is not an unprimeable number, because it can be changed into a prime (18986129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 791077 + ... + 791100.

Almost surely, 2^18986124 is an apocalyptic number.

It is an amenable number.

18986124 is an abundant number, since it is smaller than the sum of its proper divisors (25314860).

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

18986124 is a wasteful number, since it uses less digits than its factorization.

18986124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1582184 (or 1582182 counting only the distinct ones).

The product of its digits is 27648, while the sum is 39.

The square root of 18986124 is about 4357.3069664645. The cubic root of 18986124 is about 266.7751898570.

It can be divided in two parts, 18986 and 124, that added together give a triangular number (19110 = T₁₉₅).

The spelling of 18986124 in words is "eighteen million, nine hundred eighty-six thousand, one hundred twenty-four".