1680818011 has 2 divisors, whose sum is σ = 1680818012. Its totient is φ = 1680818010.

The previous prime is 1680817997. The next prime is 1680818023. The reversal of 1680818011 is 1108180861.

It is a strong prime.

It is an emirp because it is prime and its reverse (1108180861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1680818011 - 2²¹ = 1678720859 is a prime.

It is a super-2 number, since 2×1680818011² = 5650298372203992242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1680812011) 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, 840409005 + 840409006.

It is an arithmetic number, because the mean of its divisors is an integer number (840409006).

Almost surely, 2^1680818011 is an apocalyptic number.

1680818011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1680818011 is an equidigital number, since it uses as much as digits as its factorization.

1680818011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 34.

The square root of 1680818011 is about 40997.7805618792. The cubic root of 1680818011 is about 1188.9773034336.

Adding to 1680818011 its reverse (1108180861), we get a palindrome (2788998872).

The spelling of 1680818011 in words is "one billion, six hundred eighty million, eight hundred eighteen thousand, eleven".