1718913997 has 2 divisors, whose sum is σ = 1718913998. Its totient is φ = 1718913996.

The previous prime is 1718913961. The next prime is 1718914003. The reversal of 1718913997 is 7993198171.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1016716996 + 702197001 = 31886^2 + 26499^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1718913997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1718917997) 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, 859456998 + 859456999.

It is an arithmetic number, because the mean of its divisors is an integer number (859456999).

Almost surely, 2^1718913997 is an apocalyptic number.

It is an amenable number.

1718913997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1718913997 is an equidigital number, since it uses as much as digits as its factorization.

1718913997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 857304, while the sum is 55.

The square root of 1718913997 is about 41459.7877105033. The cubic root of 1718913997 is about 1197.8930614047.

The spelling of 1718913997 in words is "one billion, seven hundred eighteen million, nine hundred thirteen thousand, nine hundred ninety-seven".