19000101909 has 4 divisors (see below), whose sum is σ = 25333469216. Its totient is φ = 12666734604.

The previous prime is 19000101907. The next prime is 19000101931. The reversal of 19000101909 is 90910100091.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 19000101909 - 2¹ = 19000101907 is a prime.

It is a super-2 number, since 2×19000101909² (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 (19000101907) 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 in 3 ways as a sum of consecutive naturals, for example, 3166683649 + ... + 3166683654.

It is an arithmetic number, because the mean of its divisors is an integer number (6333367304).

Almost surely, 2^19000101909 is an apocalyptic number.

It is an amenable number.

19000101909 is a deficient number, since it is larger than the sum of its proper divisors (6333367307).

19000101909 is an equidigital number, since it uses as much as digits as its factorization.

19000101909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6333367306.

The product of its (nonzero) digits is 729, while the sum is 30.

The spelling of 19000101909 in words is "nineteen billion, one hundred one thousand, nine hundred nine".