18395118361 has 2 divisors, whose sum is σ = 18395118362. Its totient is φ = 18395118360.

The previous prime is 18395118349. The next prime is 18395118367. The reversal of 18395118361 is 16381159381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18098589961 + 296528400 = 134531^2 + 17220^2 .

It is a cyclic number.

It is not a de Polignac number, because 18395118361 - 2¹³ = 18395110169 is a prime.

It is not a weakly prime, because it can be changed into another prime (18395118367) 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, 9197559180 + 9197559181.

It is an arithmetic number, because the mean of its divisors is an integer number (9197559181).

Almost surely, 2^18395118361 is an apocalyptic number.

It is an amenable number.

18395118361 is a deficient number, since it is larger than the sum of its proper divisors (1).

18395118361 is an equidigital number, since it uses as much as digits as its factorization.

18395118361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 46.

The spelling of 18395118361 in words is "eighteen billion, three hundred ninety-five million, one hundred eighteen thousand, three hundred sixty-one".