2168805473 has 2 divisors, whose sum is σ = 2168805474. Its totient is φ = 2168805472.

The previous prime is 2168805469. The next prime is 2168805479. The reversal of 2168805473 is 3745088612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1872552529 + 296252944 = 43273^2 + 17212^2 .

It is a cyclic number.

It is not a de Polignac number, because 2168805473 - 2² = 2168805469 is a prime.

It is not a weakly prime, because it can be changed into another prime (2168805479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1084402736 + 1084402737.

It is an arithmetic number, because the mean of its divisors is an integer number (1084402737).

Almost surely, 2^2168805473 is an apocalyptic number.

It is an amenable number.

2168805473 is a deficient number, since it is larger than the sum of its proper divisors (1).

2168805473 is an equidigital number, since it uses as much as digits as its factorization.

2168805473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 322560, while the sum is 44.

The square root of 2168805473 is about 46570.4356110183. The cubic root of 2168805473 is about 1294.4149895616.

The spelling of 2168805473 in words is "two billion, one hundred sixty-eight million, eight hundred five thousand, four hundred seventy-three".