1851532606717 has 2 divisors, whose sum is σ = 1851532606718. Its totient is φ = 1851532606716.

The previous prime is 1851532606591. The next prime is 1851532606739. The reversal of 1851532606717 is 7176062351581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1068217334116 + 783315272601 = 1033546^2 + 885051^2 .

It is a cyclic number.

It is not a de Polignac number, because 1851532606717 - 2³⁵ = 1817172868349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1851532606757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 925766303358 + 925766303359.

It is an arithmetic number, because the mean of its divisors is an integer number (925766303359).

Almost surely, 2^{1851532606717} is an apocalyptic number.

It is an amenable number.

1851532606717 is a deficient number, since it is larger than the sum of its proper divisors (1).

1851532606717 is an equidigital number, since it uses as much as digits as its factorization.

1851532606717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2116800, while the sum is 52.

The spelling of 1851532606717 in words is "one trillion, eight hundred fifty-one billion, five hundred thirty-two million, six hundred six thousand, seven hundred seventeen".