18418612 has 24 divisors (see below), whose sum is σ = 32826080. Its totient is φ = 9041760.

The previous prime is 18418591. The next prime is 18418627. The reversal of 18418612 is 21681481.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 87187 + ... + 87397.

Almost surely, 2^18418612 is an apocalyptic number.

It is an amenable number.

18418612 is a deficient number, since it is larger than the sum of its proper divisors (14407468).

18418612 is a wasteful number, since it uses less digits than its factorization.

18418612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511 (or 509 counting only the distinct ones).

The product of its digits is 3072, while the sum is 31.

The square root of 18418612 is about 4291.6910420020. The cubic root of 18418612 is about 264.0902086886.

The spelling of 18418612 in words is "eighteen million, four hundred eighteen thousand, six hundred twelve".