16018066 has 4 divisors (see below), whose sum is σ = 24027102. Its totient is φ = 8009032.

The previous prime is 16018043. The next prime is 16018091. The reversal of 16018066 is 66081061.

16018066 is nontrivially palindromic in base 15.

16018066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 8614225 + 7403841 = 2935^2 + 2721^2 .

16018066 is an undulating number in base 15.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4004515 + ... + 4004518.

Almost surely, 2^16018066 is an apocalyptic number.

16018066 is a deficient number, since it is larger than the sum of its proper divisors (8009036).

16018066 is an equidigital number, since it uses as much as digits as its factorization.

16018066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8009035.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 16018066 is about 4002.2576128980. The cubic root of 16018066 is about 252.0790148628.

The spelling of 16018066 in words is "sixteen million, eighteen thousand, sixty-six".