18445612 has 24 divisors (see below), whose sum is σ = 34310304. Its totient is φ = 8646912.

The previous prime is 18445601. The next prime is 18445619. The reversal of 18445612 is 21654481.

It is not an unprimeable number, because it can be changed into a prime (18445619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32838 + ... + 33394.

It is an arithmetic number, because the mean of its divisors is an integer number (1429596).

Almost surely, 2^18445612 is an apocalyptic number.

It is an amenable number.

18445612 is a deficient number, since it is larger than the sum of its proper divisors (15864692).

18445612 is a wasteful number, since it uses less digits than its factorization.

18445612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065 (or 1063 counting only the distinct ones).

The product of its digits is 7680, while the sum is 31.

The square root of 18445612 is about 4294.8355032527. The cubic root of 18445612 is about 264.2191897121.

It can be divided in two parts, 184 and 45612, that added together give a square (45796 = 214²).

The spelling of 18445612 in words is "eighteen million, four hundred forty-five thousand, six hundred twelve".