18605838373 has 2 divisors, whose sum is σ = 18605838374. Its totient is φ = 18605838372.

The previous prime is 18605838371. The next prime is 18605838401. The reversal of 18605838373 is 37383850681.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14223663169 + 4382175204 = 119263^2 + 66198^2 .

It is a cyclic number.

It is not a de Polignac number, because 18605838373 - 2¹ = 18605838371 is a prime.

Together with 18605838371, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 18605838373.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18605838371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9302919186 + 9302919187.

It is an arithmetic number, because the mean of its divisors is an integer number (9302919187).

Almost surely, 2^18605838373 is an apocalyptic number.

It is an amenable number.

18605838373 is a deficient number, since it is larger than the sum of its proper divisors (1).

18605838373 is an equidigital number, since it uses as much as digits as its factorization.

18605838373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 18605838373 in words is "eighteen billion, six hundred five million, eight hundred thirty-eight thousand, three hundred seventy-three".