18585476573 has 2 divisors, whose sum is σ = 18585476574. Its totient is φ = 18585476572.

The previous prime is 18585476561. The next prime is 18585476597. The reversal of 18585476573 is 37567458581.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13359198724 + 5226277849 = 115582^2 + 72293^2 .

It is an emirp because it is prime and its reverse (37567458581) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18585476573 - 2⁶ = 18585476509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18585476873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9292738286 + 9292738287.

It is an arithmetic number, because the mean of its divisors is an integer number (9292738287).

Almost surely, 2^18585476573 is an apocalyptic number.

It is an amenable number.

18585476573 is a deficient number, since it is larger than the sum of its proper divisors (1).

18585476573 is an equidigital number, since it uses as much as digits as its factorization.

18585476573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224000, while the sum is 59.

The spelling of 18585476573 in words is "eighteen billion, five hundred eighty-five million, four hundred seventy-six thousand, five hundred seventy-three".