16019 has 4 divisors (see below), whose sum is σ = 16296. Its totient is φ = 15744.

The previous prime is 16007. The next prime is 16033. The reversal of 16019 is 91061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91061 = 41 ⋅2221.

It is a cyclic number.

It is not a de Polignac number, because 16019 - 2¹² = 11923 is a prime.

It is a super-2 number, since 2×16019² = 513216722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15988 and 16006.

It is not an unprimeable number, because it can be changed into a prime (16069) 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, 14 + ... + 179.

It is an arithmetic number, because the mean of its divisors is an integer number (4074).

2¹⁶⁰¹⁹ is an apocalyptic number.

16019 is a deficient number, since it is larger than the sum of its proper divisors (277).

16019 is an equidigital number, since it uses as much as digits as its factorization.

16019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 16019 is about 126.5661882179. The cubic root of 16019 is about 25.2083914273.

The spelling of 16019 in words is "sixteen thousand, nineteen".