18966082919347 has 2 divisors, whose sum is σ = 18966082919348. Its totient is φ = 18966082919346.

The previous prime is 18966082919221. The next prime is 18966082919353. The reversal of 18966082919347 is 74391928066981.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18966082919347 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18966082919347.

It is not a weakly prime, because it can be changed into another prime (18966082919387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9483041459673 + 9483041459674.

It is an arithmetic number, because the mean of its divisors is an integer number (9483041459674).

Almost surely, 2^{18966082919347} is an apocalyptic number.

18966082919347 is a deficient number, since it is larger than the sum of its proper divisors (1).

18966082919347 is an equidigital number, since it uses as much as digits as its factorization.

18966082919347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 282175488, while the sum is 73.

The spelling of 18966082919347 in words is "eighteen trillion, nine hundred sixty-six billion, eighty-two million, nine hundred nineteen thousand, three hundred forty-seven".