16816379 has 4 divisors (see below), whose sum is σ = 16843176. Its totient is φ = 16789584.

The previous prime is 16816369. The next prime is 16816403. The reversal of 16816379 is 97361861.

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

It is a cyclic number.

It is not a de Polignac number, because 16816379 - 2²⁴ = 39163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16816369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12434 + ... + 13719.

It is an arithmetic number, because the mean of its divisors is an integer number (4210794).

Almost surely, 2^16816379 is an apocalyptic number.

16816379 is a deficient number, since it is larger than the sum of its proper divisors (26797).

16816379 is an equidigital number, since it uses as much as digits as its factorization.

16816379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26796.

The product of its digits is 54432, while the sum is 41.

The square root of 16816379 is about 4100.7778530420. Note that the first 3 decimals coincide. The cubic root of 16816379 is about 256.1990385273.

The spelling of 16816379 in words is "sixteen million, eight hundred sixteen thousand, three hundred seventy-nine".