16338865 has 4 divisors (see below), whose sum is σ = 19606644. Its totient is φ = 13071088.

The previous prime is 16338863. The next prime is 16338877. The reversal of 16338865 is 56883361.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11621281 + 4717584 = 3409^2 + 2172^2 .

It is a cyclic number.

It is not a de Polignac number, because 16338865 - 2¹ = 16338863 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16338863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1633882 + ... + 1633891.

It is an arithmetic number, because the mean of its divisors is an integer number (4901661).

Almost surely, 2^16338865 is an apocalyptic number.

It is an amenable number.

16338865 is a deficient number, since it is larger than the sum of its proper divisors (3267779).

16338865 is an equidigital number, since it uses as much as digits as its factorization.

16338865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3267778.

The product of its digits is 103680, while the sum is 40.

The square root of 16338865 is about 4042.1361926585. The cubic root of 16338865 is about 253.7507267809.

The spelling of 16338865 in words is "sixteen million, three hundred thirty-eight thousand, eight hundred sixty-five".