19327352861 has 2 divisors, whose sum is σ = 19327352862. Its totient is φ = 19327352860.

The previous prime is 19327352797. The next prime is 19327352879. The reversal of 19327352861 is 16825372391.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18014739961 + 1312612900 = 134219^2 + 36230^2 .

It is a cyclic number.

It is not a de Polignac number, because 19327352861 - 2⁶ = 19327352797 is a prime.

It is a super-2 number, since 2×19327352861² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19327342861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9663676430 + 9663676431.

It is an arithmetic number, because the mean of its divisors is an integer number (9663676431).

Almost surely, 2^19327352861 is an apocalyptic number.

It is an amenable number.

19327352861 is a deficient number, since it is larger than the sum of its proper divisors (1).

19327352861 is an equidigital number, since it uses as much as digits as its factorization.

19327352861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 47.

The spelling of 19327352861 in words is "nineteen billion, three hundred twenty-seven million, three hundred fifty-two thousand, eight hundred sixty-one".