18242916 has 24 divisors (see below), whose sum is σ = 42876960. Its totient is φ = 6036672.

The previous prime is 18242899. The next prime is 18242951. The reversal of 18242916 is 61924281.

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, 3801 + ... + 7136.

It is an arithmetic number, because the mean of its divisors is an integer number (1786540).

Almost surely, 2^18242916 is an apocalyptic number.

It is an amenable number.

18242916 is an abundant number, since it is smaller than the sum of its proper divisors (24634044).

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

18242916 is a wasteful number, since it uses less digits than its factorization.

18242916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11083 (or 11081 counting only the distinct ones).

The product of its digits is 6912, while the sum is 33.

The square root of 18242916 is about 4271.1726726977. The cubic root of 18242916 is about 263.2478014515.

The spelling of 18242916 in words is "eighteen million, two hundred forty-two thousand, nine hundred sixteen".