1718338345 has 4 divisors (see below), whose sum is σ = 2062006020. Its totient is φ = 1374670672.

The previous prime is 1718338343. The next prime is 1718338367. The reversal of 1718338345 is 5438338171.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5438338171 = 7 ⋅776905453.

It can be written as a sum of positive squares in 2 ways, for example, as 1270423449 + 447914896 = 35643^2 + 21164^2 .

It is a cyclic number.

It is not a de Polignac number, because 1718338345 - 2¹ = 1718338343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1718338343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171833830 + ... + 171833839.

It is an arithmetic number, because the mean of its divisors is an integer number (515501505).

Almost surely, 2^1718338345 is an apocalyptic number.

It is an amenable number.

1718338345 is a deficient number, since it is larger than the sum of its proper divisors (343667675).

1718338345 is an equidigital number, since it uses as much as digits as its factorization.

1718338345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343667674.

The product of its digits is 241920, while the sum is 43.

The square root of 1718338345 is about 41452.8448360303. The cubic root of 1718338345 is about 1197.7593245357.

The spelling of 1718338345 in words is "one billion, seven hundred eighteen million, three hundred thirty-eight thousand, three hundred forty-five".