16973819 has 4 divisors (see below), whose sum is σ = 17000160. Its totient is φ = 16947480.

The previous prime is 16973767. The next prime is 16973849. The reversal of 16973819 is 91837961.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16973819 is a prime.

It is a super-2 number, since 2×16973819² = 576221062889522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16973819.

It is not an unprimeable number, because it can be changed into a prime (16973849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12179 + ... + 13500.

It is an arithmetic number, because the mean of its divisors is an integer number (4250040).

Almost surely, 2^16973819 is an apocalyptic number.

16973819 is a deficient number, since it is larger than the sum of its proper divisors (26341).

16973819 is an equidigital number, since it uses as much as digits as its factorization.

16973819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26340.

The product of its digits is 81648, while the sum is 44.

The square root of 16973819 is about 4119.9294896879. The cubic root of 16973819 is about 256.9960937498.

The spelling of 16973819 in words is "sixteen million, nine hundred seventy-three thousand, eight hundred nineteen".