18064395773 has 2 divisors, whose sum is σ = 18064395774. Its totient is φ = 18064395772.

The previous prime is 18064395743. The next prime is 18064395793. The reversal of 18064395773 is 37759346081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13524061849 + 4540333924 = 116293^2 + 67382^2 .

It is a cyclic number.

It is not a de Polignac number, because 18064395773 - 2¹⁰ = 18064394749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18064395743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9032197886 + 9032197887.

It is an arithmetic number, because the mean of its divisors is an integer number (9032197887).

Almost surely, 2^18064395773 is an apocalyptic number.

It is an amenable number.

18064395773 is a deficient number, since it is larger than the sum of its proper divisors (1).

18064395773 is an equidigital number, since it uses as much as digits as its factorization.

18064395773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3810240, while the sum is 53.

The spelling of 18064395773 in words is "eighteen billion, sixty-four million, three hundred ninety-five thousand, seven hundred seventy-three".