19207809047 has 12 divisors (see below), whose sum is σ = 23114254680. Its totient is φ = 15896116656.

The previous prime is 19207809029. The next prime is 19207809053. The reversal of 19207809047 is 74090870291.

It is not a de Polignac number, because 19207809047 - 2¹⁸ = 19207546903 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19207808992 and 19207809010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19207809007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6757133 + ... + 6759974.

It is an arithmetic number, because the mean of its divisors is an integer number (1926187890).

Almost surely, 2^19207809047 is an apocalyptic number.

19207809047 is a deficient number, since it is larger than the sum of its proper divisors (3906445633).

19207809047 is a wasteful number, since it uses less digits than its factorization.

19207809047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13517150 (or 13517143 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 47.

The spelling of 19207809047 in words is "nineteen billion, two hundred seven million, eight hundred nine thousand, forty-seven".