16809119 has 4 divisors (see below), whose sum is σ = 16873296. Its totient is φ = 16744944.

The previous prime is 16809103. The next prime is 16809193. The reversal of 16809119 is 91190861.

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 16809119 - 2⁴ = 16809103 is a prime.

It is a super-2 number, since 2×16809119² = 565092963112322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16809019) 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, 31694 + ... + 32219.

It is an arithmetic number, because the mean of its divisors is an integer number (4218324).

Almost surely, 2^16809119 is an apocalyptic number.

16809119 is a deficient number, since it is larger than the sum of its proper divisors (64177).

16809119 is an equidigital number, since it uses as much as digits as its factorization.

16809119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64176.

The product of its (nonzero) digits is 3888, while the sum is 35.

The square root of 16809119 is about 4099.8925595679. The cubic root of 16809119 is about 256.1621643038.

The spelling of 16809119 in words is "sixteen million, eight hundred nine thousand, one hundred nineteen".