19000050509 has 8 divisors (see below), whose sum is σ = 20756904480. Its totient is φ = 17248126000.

The previous prime is 19000050497. The next prime is 19000050533. The reversal of 19000050509 is 90505000091.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19000050509 is a prime.

It is a super-2 number, since 2×19000050509² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19000050539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1224299 + ... + 1239720.

It is an arithmetic number, because the mean of its divisors is an integer number (2594613060).

Almost surely, 2^19000050509 is an apocalyptic number.

It is an amenable number.

19000050509 is a deficient number, since it is larger than the sum of its proper divisors (1756853971).

19000050509 is a wasteful number, since it uses less digits than its factorization.

19000050509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2464731.

The product of its (nonzero) digits is 2025, while the sum is 29.

The spelling of 19000050509 in words is "nineteen billion, fifty thousand, five hundred nine".