18768071573 has 2 divisors, whose sum is σ = 18768071574. Its totient is φ = 18768071572.

The previous prime is 18768071527. The next prime is 18768071639. The reversal of 18768071573 is 37517086781.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17936441329 + 831630244 = 133927^2 + 28838^2 .

It is a cyclic number.

It is not a de Polignac number, because 18768071573 - 2¹² = 18768067477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18768071173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9384035786 + 9384035787.

It is an arithmetic number, because the mean of its divisors is an integer number (9384035787).

Almost surely, 2^18768071573 is an apocalyptic number.

It is an amenable number.

18768071573 is a deficient number, since it is larger than the sum of its proper divisors (1).

18768071573 is an equidigital number, since it uses as much as digits as its factorization.

18768071573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1975680, while the sum is 53.

The spelling of 18768071573 in words is "eighteen billion, seven hundred sixty-eight million, seventy-one thousand, five hundred seventy-three".