164826746849 has 2 divisors, whose sum is σ = 164826746850. Its totient is φ = 164826746848.

The previous prime is 164826746827. The next prime is 164826746897. The reversal of 164826746849 is 948647628461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 164653350625 + 173396224 = 405775^2 + 13168^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164826746849 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (164826746809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82413373424 + 82413373425.

It is an arithmetic number, because the mean of its divisors is an integer number (82413373425).

Almost surely, 2^164826746849 is an apocalyptic number.

It is an amenable number.

164826746849 is a deficient number, since it is larger than the sum of its proper divisors (1).

164826746849 is an equidigital number, since it uses as much as digits as its factorization.

164826746849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 111476736, while the sum is 65.

The spelling of 164826746849 in words is "one hundred sixty-four billion, eight hundred twenty-six million, seven hundred forty-six thousand, eight hundred forty-nine".