1660541339 has 2 divisors, whose sum is σ = 1660541340. Its totient is φ = 1660541338.

The previous prime is 1660541297. The next prime is 1660541341. The reversal of 1660541339 is 9331450661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1660541339 - 2⁸ = 1660541083 is a prime.

It is a super-3 number, since 3×1660541339³ (a number of 29 digits) contains 333 as substring.

It is a Sophie Germain prime.

Together with 1660541341, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1660540339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 830270669 + 830270670.

It is an arithmetic number, because the mean of its divisors is an integer number (830270670).

Almost surely, 2^1660541339 is an apocalyptic number.

1660541339 is a deficient number, since it is larger than the sum of its proper divisors (1).

1660541339 is an equidigital number, since it uses as much as digits as its factorization.

1660541339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 1660541339 is about 40749.7403550010. The cubic root of 1660541339 is about 1184.1768426789.

The spelling of 1660541339 in words is "one billion, six hundred sixty million, five hundred forty-one thousand, three hundred thirty-nine".