18063916 has 24 divisors (see below), whose sum is σ = 34366640. Its totient is φ = 8258112.

The previous prime is 18063907. The next prime is 18063919. The reversal of 18063916 is 61936081.

It is a super-2 number, since 2×18063916² = 652610122510112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18063919) 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, 4075 + ... + 7261.

Almost surely, 2^18063916 is an apocalyptic number.

It is an amenable number.

18063916 is a deficient number, since it is larger than the sum of its proper divisors (16302724).

18063916 is a wasteful number, since it uses less digits than its factorization.

18063916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3313 (or 3311 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 18063916 is about 4250.1665849705. The cubic root of 18063916 is about 262.3839716997.

Adding to 18063916 its reverse (61936081), we get a palindrome (79999997).

The spelling of 18063916 in words is "eighteen million, sixty-three thousand, nine hundred sixteen".