2801766161 has 2 divisors, whose sum is σ = 2801766162. Its totient is φ = 2801766160.

The previous prime is 2801766157. The next prime is 2801766197. The reversal of 2801766161 is 1616671082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2800420561 + 1345600 = 52919^2 + 1160^2 .

It is a cyclic number.

It is not a de Polignac number, because 2801766161 - 2² = 2801766157 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 (2801766761) 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, 1400883080 + 1400883081.

It is an arithmetic number, because the mean of its divisors is an integer number (1400883081).

Almost surely, 2^2801766161 is an apocalyptic number.

It is an amenable number.

2801766161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2801766161 is an equidigital number, since it uses as much as digits as its factorization.

2801766161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 2801766161 is about 52931.7122432290. The cubic root of 2801766161 is about 1409.7560332723.

The spelling of 2801766161 in words is "two billion, eight hundred one million, seven hundred sixty-six thousand, one hundred sixty-one".