19190000305 has 16 divisors (see below), whose sum is σ = 26710519680. Its totient is φ = 12962454912.

The previous prime is 19190000233. The next prime is 19190000329. The reversal of 19190000305 is 50300009191.

It is a cyclic number.

It is not a de Polignac number, because 19190000305 - 2⁷ = 19190000177 is a prime.

It is a super-2 number, since 2×19190000305² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 4089340 + ... + 4094029.

It is an arithmetic number, because the mean of its divisors is an integer number (1669407480).

Almost surely, 2^19190000305 is an apocalyptic number.

It is an amenable number.

19190000305 is a deficient number, since it is larger than the sum of its proper divisors (7520519375).

19190000305 is an equidigital number, since it uses as much as digits as its factorization.

19190000305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8183448.

The product of its (nonzero) digits is 1215, while the sum is 28.

Adding to 19190000305 its reverse (50300009191), we get a palindrome (69490009496).

The spelling of 19190000305 in words is "nineteen billion, one hundred ninety million, three hundred five", and thus it is an aban number.