1718363161 has 2 divisors, whose sum is σ = 1718363162. Its totient is φ = 1718363160.

The previous prime is 1718363149. The next prime is 1718363221. The reversal of 1718363161 is 1613638171.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1316601225 + 401761936 = 36285^2 + 20044^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1718363161 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1718363161.

It is not a weakly prime, because it can be changed into another prime (1718363261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 859181580 + 859181581.

It is an arithmetic number, because the mean of its divisors is an integer number (859181581).

Almost surely, 2^1718363161 is an apocalyptic number.

It is an amenable number.

1718363161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1718363161 is an equidigital number, since it uses as much as digits as its factorization.

1718363161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 37.

The square root of 1718363161 is about 41453.1441630186. The cubic root of 1718363161 is about 1197.7650904650.

The spelling of 1718363161 in words is "one billion, seven hundred eighteen million, three hundred sixty-three thousand, one hundred sixty-one".