16518116 has 6 divisors (see below), whose sum is σ = 28906710. Its totient is φ = 8259056.

The previous prime is 16518097. The next prime is 16518119. The reversal of 16518116 is 61181561.

It can be written as a sum of positive squares in only one way, i.e., 15241216 + 1276900 = 3904^2 + 1130^2 .

It is not an unprimeable number, because it can be changed into a prime (16518119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2064761 + ... + 2064768.

It is an arithmetic number, because the mean of its divisors is an integer number (4817785).

Almost surely, 2^16518116 is an apocalyptic number.

It is an amenable number.

16518116 is a deficient number, since it is larger than the sum of its proper divisors (12388594).

16518116 is a wasteful number, since it uses less digits than its factorization.

16518116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4129533 (or 4129531 counting only the distinct ones).

The product of its digits is 1440, while the sum is 29.

The square root of 16518116 is about 4064.2485160236. The cubic root of 16518116 is about 254.6753063353.

Adding to 16518116 its reverse (61181561), we get a palindrome (77699677).

It can be divided in two parts, 165 and 18116, that added together give a palindrome (18281).

The spelling of 16518116 in words is "sixteen million, five hundred eighteen thousand, one hundred sixteen".