19128419 has 2 divisors, whose sum is σ = 19128420. Its totient is φ = 19128418.

The previous prime is 19128413. The next prime is 19128463. The reversal of 19128419 is 91482191.

It is a weak prime.

It is an emirp because it is prime and its reverse (91482191) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19128419 - 2²⁰ = 18079843 is a prime.

It is a super-2 number, since 2×19128419² = 731792826879122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19128413) 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 as a sum of consecutive naturals, namely, 9564209 + 9564210.

It is an arithmetic number, because the mean of its divisors is an integer number (9564210).

Almost surely, 2^19128419 is an apocalyptic number.

19128419 is a deficient number, since it is larger than the sum of its proper divisors (1).

19128419 is an equidigital number, since it uses as much as digits as its factorization.

19128419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 35.

The square root of 19128419 is about 4373.6048061067. The cubic root of 19128419 is about 267.4399970230.

The spelling of 19128419 in words is "nineteen million, one hundred twenty-eight thousand, four hundred nineteen".