19050019 has 4 divisors (see below), whose sum is σ = 19063744. Its totient is φ = 19036296.

The previous prime is 19050011. The next prime is 19050041. The reversal of 19050019 is 91005091.

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 19050019 - 2³ = 19050011 is a prime.

It is a super-2 number, since 2×19050019² = 725806447800722, 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 = 19049975 and 19050002.

It is not an unprimeable number, because it can be changed into a prime (19050011) 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 in 3 ways as a sum of consecutive naturals, for example, 4512 + ... + 7645.

It is an arithmetic number, because the mean of its divisors is an integer number (4765936).

Almost surely, 2^19050019 is an apocalyptic number.

19050019 is a deficient number, since it is larger than the sum of its proper divisors (13725).

19050019 is a wasteful number, since it uses less digits than its factorization.

19050019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13724.

The product of its (nonzero) digits is 405, while the sum is 25.

The square root of 19050019 is about 4364.6327451459. The cubic root of 19050019 is about 267.0741189581.

The spelling of 19050019 in words is "nineteen million, fifty thousand, nineteen".