2068163641 has 2 divisors, whose sum is σ = 2068163642. Its totient is φ = 2068163640.

The previous prime is 2068163633. The next prime is 2068163651. The reversal of 2068163641 is 1463618602.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1998090000 + 70073641 = 44700^2 + 8371^2 .

It is a cyclic number.

It is not a de Polignac number, because 2068163641 - 2³ = 2068163633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2068163641.

It is not a weakly prime, because it can be changed into another prime (2068163621) 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, 1034081820 + 1034081821.

It is an arithmetic number, because the mean of its divisors is an integer number (1034081821).

Almost surely, 2^2068163641 is an apocalyptic number.

It is an amenable number.

2068163641 is a deficient number, since it is larger than the sum of its proper divisors (1).

2068163641 is an equidigital number, since it uses as much as digits as its factorization.

2068163641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 2068163641 is about 45477.0671987541. The cubic root of 2068163641 is about 1274.0749185595.

The spelling of 2068163641 in words is "two billion, sixty-eight million, one hundred sixty-three thousand, six hundred forty-one".