19065942971 has 4 divisors (see below), whose sum is σ = 19350509352. Its totient is φ = 18781376592.

The previous prime is 19065942913. The next prime is 19065943007. The reversal of 19065942971 is 17924956091.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19065942971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19065942911) 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 3 ways as a sum of consecutive naturals, for example, 142283090 + ... + 142283223.

It is an arithmetic number, because the mean of its divisors is an integer number (4837627338).

Almost surely, 2^19065942971 is an apocalyptic number.

19065942971 is a deficient number, since it is larger than the sum of its proper divisors (284566381).

19065942971 is an equidigital number, since it uses as much as digits as its factorization.

19065942971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284566380.

The product of its (nonzero) digits is 1224720, while the sum is 53.

The spelling of 19065942971 in words is "nineteen billion, sixty-five million, nine hundred forty-two thousand, nine hundred seventy-one".