1660542011 has 2 divisors, whose sum is σ = 1660542012. Its totient is φ = 1660542010.

The previous prime is 1660541977. The next prime is 1660542041. The reversal of 1660542011 is 1102450661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1660542011 - 2³⁰ = 586800187 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1660542041) 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, 830271005 + 830271006.

It is an arithmetic number, because the mean of its divisors is an integer number (830271006).

Almost surely, 2^1660542011 is an apocalyptic number.

1660542011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1660542011 is an equidigital number, since it uses as much as digits as its factorization.

1660542011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1660542011 is about 40749.7486004515. The cubic root of 1660542011 is about 1184.1770024194.

Adding to 1660542011 its reverse (1102450661), we get a palindrome (2762992672).

The spelling of 1660542011 in words is "one billion, six hundred sixty million, five hundred forty-two thousand, eleven".