18605872 has 10 divisors (see below), whose sum is σ = 36048908. Its totient is φ = 9302928.

The previous prime is 18605863. The next prime is 18605879. The reversal of 18605872 is 27850681.

It is not an unprimeable number, because it can be changed into a prime (18605879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 581418 + ... + 581449.

Almost surely, 2^18605872 is an apocalyptic number.

It is an amenable number.

18605872 is a deficient number, since it is larger than the sum of its proper divisors (17443036).

18605872 is a wasteful number, since it uses less digits than its factorization.

18605872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162875 (or 1162869 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 18605872 is about 4313.4524455475. The cubic root of 18605872 is about 264.9821846336.

The spelling of 18605872 in words is "eighteen million, six hundred five thousand, eight hundred seventy-two".