18445016 has 8 divisors (see below), whose sum is σ = 34584420. Its totient is φ = 9222504.

The previous prime is 18445003. The next prime is 18445027. The reversal of 18445016 is 61054481.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 18445016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1152806 + ... + 1152821.

Almost surely, 2^18445016 is an apocalyptic number.

It is an amenable number.

18445016 is a deficient number, since it is larger than the sum of its proper divisors (16139404).

18445016 is a wasteful number, since it uses less digits than its factorization.

18445016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2305633 (or 2305629 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 18445016 is about 4294.7661170313. The cubic root of 18445016 is about 264.2163439344.

Adding to 18445016 its reverse (61054481), we get a palindrome (79499497).

The spelling of 18445016 in words is "eighteen million, four hundred forty-five thousand, sixteen".