19419 has 4 divisors (see below), whose sum is σ = 25896. Its totient is φ = 12944.

The previous prime is 19417. The next prime is 19421. The reversal of 19419 is 91491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91491 = 3 ⋅30497.

It is an interprime number because it is at equal distance from previous prime (19417) and next prime (19421).

It is a cyclic number.

It is not a de Polignac number, because 19419 - 2¹ = 19417 is a prime.

It is a super-2 number, since 2×19419² = 754195122, which contains 22 as substring.

It is a D-number.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (19417) 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, 3234 + ... + 3239.

It is an arithmetic number, because the mean of its divisors is an integer number (6474).

2¹⁹⁴¹⁹ is an apocalyptic number.

19419 is a deficient number, since it is larger than the sum of its proper divisors (6477).

19419 is an equidigital number, since it uses as much as digits as its factorization.

19419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6476.

The product of its digits is 324, while the sum is 24.

The square root of 19419 is about 139.3520721052. The cubic root of 19419 is about 26.8787429436.

The spelling of 19419 in words is "nineteen thousand, four hundred nineteen".