16816369 has 2 divisors, whose sum is σ = 16816370. Its totient is φ = 16816368.

The previous prime is 16816367. The next prime is 16816403. The reversal of 16816369 is 96361861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15523600 + 1292769 = 3940^2 + 1137^2 .

It is an emirp because it is prime and its reverse (96361861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16816369 - 2¹ = 16816367 is a prime.

It is a super-2 number, since 2×16816369² = 565580532688322, which contains 22 as substring.

Together with 16816367, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (16816367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8408184 + 8408185.

It is an arithmetic number, because the mean of its divisors is an integer number (8408185).

Almost surely, 2^16816369 is an apocalyptic number.

It is an amenable number.

16816369 is a deficient number, since it is larger than the sum of its proper divisors (1).

16816369 is an equidigital number, since it uses as much as digits as its factorization.

16816369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 40.

The square root of 16816369 is about 4100.7766337610. The cubic root of 16816369 is about 256.1989877436.

The spelling of 16816369 in words is "sixteen million, eight hundred sixteen thousand, three hundred sixty-nine".