1868342717 has 2 divisors, whose sum is σ = 1868342718. Its totient is φ = 1868342716.

The previous prime is 1868342701. The next prime is 1868342747. The reversal of 1868342717 is 7172438681.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1093889476 + 774453241 = 33074^2 + 27829^2 .

It is a cyclic number.

It is not a de Polignac number, because 1868342717 - 2⁴ = 1868342701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1868342747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 934171358 + 934171359.

It is an arithmetic number, because the mean of its divisors is an integer number (934171359).

Almost surely, 2^1868342717 is an apocalyptic number.

It is an amenable number.

1868342717 is a deficient number, since it is larger than the sum of its proper divisors (1).

1868342717 is an equidigital number, since it uses as much as digits as its factorization.

1868342717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 451584, while the sum is 47.

The square root of 1868342717 is about 43224.3301509694. The cubic root of 1868342717 is about 1231.6449045928.

The spelling of 1868342717 in words is "one billion, eight hundred sixty-eight million, three hundred forty-two thousand, seven hundred seventeen".