18689016 has 16 divisors (see below), whose sum is σ = 46722600. Its totient is φ = 6229664.

The previous prime is 18689003. The next prime is 18689023. The reversal of 18689016 is 61098681.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 389331 + ... + 389378.

Almost surely, 2^18689016 is an apocalyptic number.

It is an amenable number.

18689016 is an abundant number, since it is smaller than the sum of its proper divisors (28033584).

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

18689016 is a wasteful number, since it uses less digits than its factorization.

18689016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778718 (or 778714 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 18689016 is about 4323.0794579790. The cubic root of 18689016 is about 265.3763064886.

The spelling of 18689016 in words is "eighteen million, six hundred eighty-nine thousand, sixteen".