1718188013 has 2 divisors, whose sum is σ = 1718188014. Its totient is φ = 1718188012.

The previous prime is 1718187971. The next prime is 1718188033. The reversal of 1718188013 is 3108818171.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1684117444 + 34070569 = 41038^2 + 5837^2 .

It is a cyclic number.

It is not a de Polignac number, because 1718188013 - 2²² = 1713993709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1718188033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 859094006 + 859094007.

It is an arithmetic number, because the mean of its divisors is an integer number (859094007).

Almost surely, 2^1718188013 is an apocalyptic number.

It is an amenable number.

1718188013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1718188013 is an equidigital number, since it uses as much as digits as its factorization.

1718188013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 38.

The square root of 1718188013 is about 41451.0315070687. The cubic root of 1718188013 is about 1197.7243941223.

The spelling of 1718188013 in words is "one billion, seven hundred eighteen million, one hundred eighty-eight thousand, thirteen".