19783595201 has 2 divisors, whose sum is σ = 19783595202. Its totient is φ = 19783595200.

The previous prime is 19783595171. The next prime is 19783595261. The reversal of 19783595201 is 10259538791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16678431025 + 3105164176 = 129145^2 + 55724^2 .

It is an emirp because it is prime and its reverse (10259538791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19783595201 - 2³⁰ = 18709853377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19783595201.

It is not a weakly prime, because it can be changed into another prime (19783595261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9891797600 + 9891797601.

It is an arithmetic number, because the mean of its divisors is an integer number (9891797601).

Almost surely, 2^19783595201 is an apocalyptic number.

It is an amenable number.

19783595201 is a deficient number, since it is larger than the sum of its proper divisors (1).

19783595201 is an equidigital number, since it uses as much as digits as its factorization.

19783595201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 680400, while the sum is 50.

The spelling of 19783595201 in words is "nineteen billion, seven hundred eighty-three million, five hundred ninety-five thousand, two hundred one".