19965034313 has 4 divisors (see below), whose sum is σ = 22817182080. Its totient is φ = 17112886548.

The previous prime is 19965034279. The next prime is 19965034321. The reversal of 19965034313 is 31343056991.

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 a cyclic number.

It is not a de Polignac number, because 19965034313 - 2³⁴ = 2785165129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19965034343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1426073873 + ... + 1426073886.

It is an arithmetic number, because the mean of its divisors is an integer number (5704295520).

Almost surely, 2^19965034313 is an apocalyptic number.

It is an amenable number.

19965034313 is a deficient number, since it is larger than the sum of its proper divisors (2852147767).

19965034313 is an equidigital number, since it uses as much as digits as its factorization.

19965034313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2852147766.

The product of its (nonzero) digits is 262440, while the sum is 44.

The spelling of 19965034313 in words is "nineteen billion, nine hundred sixty-five million, thirty-four thousand, three hundred thirteen".