16641318 has 16 divisors (see below), whose sum is σ = 33546240. Its totient is φ = 5503176.

The previous prime is 16641307. The next prime is 16641319. The reversal of 16641318 is 81314661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16641319) 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, 10158 + ... + 11681.

It is an arithmetic number, because the mean of its divisors is an integer number (2096640).

Almost surely, 2^16641318 is an apocalyptic number.

16641318 is an abundant number, since it is smaller than the sum of its proper divisors (16904922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16641318 is a wasteful number, since it uses less digits than its factorization.

16641318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21971.

The product of its digits is 3456, while the sum is 30.

The square root of 16641318 is about 4079.3771583417. The cubic root of 16641318 is about 255.3069122738.

Adding to 16641318 its reverse (81314661), we get a palindrome (97955979).

The spelling of 16641318 in words is "sixteen million, six hundred forty-one thousand, three hundred eighteen".