19389119 has 2 divisors, whose sum is σ = 19389120. Its totient is φ = 19389118.

The previous prime is 19389109. The next prime is 19389121. The reversal of 19389119 is 91198391.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19389119 - 2⁴ = 19389103 is a prime.

It is a super-2 number, since 2×19389119² = 751875871192322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 19389121, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19389109) 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 as a sum of consecutive naturals, namely, 9694559 + 9694560.

It is an arithmetic number, because the mean of its divisors is an integer number (9694560).

Almost surely, 2^19389119 is an apocalyptic number.

19389119 is a deficient number, since it is larger than the sum of its proper divisors (1).

19389119 is an equidigital number, since it uses as much as digits as its factorization.

19389119 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17496, while the sum is 41.

The square root of 19389119 is about 4403.3077339655. The cubic root of 19389119 is about 268.6494930463.

The spelling of 19389119 in words is "nineteen million, three hundred eighty-nine thousand, one hundred nineteen".