18016996 has 6 divisors (see below), whose sum is σ = 31529750. Its totient is φ = 9008496.

The previous prime is 18016993. The next prime is 18017011. The reversal of 18016996 is 69961081.

It can be written as a sum of positive squares in only one way, i.e., 17640000 + 376996 = 4200^2 + 614^2 .

It is a super-2 number, since 2×18016996² = 649224289728032, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18016993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2252121 + ... + 2252128.

Almost surely, 2^18016996 is an apocalyptic number.

It is an amenable number.

18016996 is a deficient number, since it is larger than the sum of its proper divisors (13512754).

18016996 is a wasteful number, since it uses less digits than its factorization.

18016996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4504253 (or 4504251 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 18016996 is about 4244.6432123325. The cubic root of 18016996 is about 262.1565988818.

The spelling of 18016996 in words is "eighteen million, sixteen thousand, nine hundred ninety-six".