19796901073 has 4 divisors (see below), whose sum is σ = 19802879908. Its totient is φ = 19790922240.

The previous prime is 19796901071. The next prime is 19796901079. The reversal of 19796901073 is 37010969791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37010969791 = 1619 ⋅22860389.

It can be written as a sum of positive squares in 2 ways, for example, as 17333565649 + 2463335424 = 131657^2 + 49632^2 .

It is a cyclic number.

It is not a de Polignac number, because 19796901073 - 2¹ = 19796901071 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19796901073.

It is not an unprimeable number, because it can be changed into a prime (19796901071) 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, 2984448 + ... + 2991073.

It is an arithmetic number, because the mean of its divisors is an integer number (4950719977).

Almost surely, 2^19796901073 is an apocalyptic number.

It is an amenable number.

19796901073 is a deficient number, since it is larger than the sum of its proper divisors (5978835).

19796901073 is an equidigital number, since it uses as much as digits as its factorization.

19796901073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5978834.

The product of its (nonzero) digits is 642978, while the sum is 52.

The spelling of 19796901073 in words is "nineteen billion, seven hundred ninety-six million, nine hundred one thousand, seventy-three".