16813441 has 4 divisors (see below), whose sum is σ = 16842672. Its totient is φ = 16784212.

The previous prime is 16813399. The next prime is 16813453. The reversal of 16813441 is 14431861.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14431861 = 17 ⋅848933.

It is a cyclic number.

It is not a de Polignac number, because 16813441 - 2¹⁹ = 16289153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16813481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13735 + ... + 14908.

It is an arithmetic number, because the mean of its divisors is an integer number (4210668).

Almost surely, 2^16813441 is an apocalyptic number.

It is an amenable number.

16813441 is a deficient number, since it is larger than the sum of its proper divisors (29231).

16813441 is an equidigital number, since it uses as much as digits as its factorization.

16813441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29230.

The product of its digits is 2304, while the sum is 28.

The square root of 16813441 is about 4100.4196126738. The cubic root of 16813441 is about 256.1841174273.

The spelling of 16813441 in words is "sixteen million, eight hundred thirteen thousand, four hundred forty-one".