16803813 has 16 divisors (see below), whose sum is σ = 24204096. Its totient is φ = 10308480.

The previous prime is 16803793. The next prime is 16803821. The reversal of 16803813 is 31830861.

It is not a de Polignac number, because 16803813 - 2⁵ = 16803781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16803893) 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 15 ways as a sum of consecutive naturals, for example, 19906 + ... + 20732.

It is an arithmetic number, because the mean of its divisors is an integer number (1512756).

Almost surely, 2^16803813 is an apocalyptic number.

16803813 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

16803813 is a deficient number, since it is larger than the sum of its proper divisors (7400283).

16803813 is a wasteful number, since it uses less digits than its factorization.

16803813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364.

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

The square root of 16803813 is about 4099.2454183667. The cubic root of 16803813 is about 256.1352079141.

The spelling of 16803813 in words is "sixteen million, eight hundred three thousand, eight hundred thirteen".