1563000161 has 2 divisors, whose sum is σ = 1563000162. Its totient is φ = 1563000160.

The previous prime is 1563000151. The next prime is 1563000193. The reversal of 1563000161 is 1610003651.

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., 793492561 + 769507600 = 28169^2 + 27740^2 .

It is an emirp because it is prime and its reverse (1610003651) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1563000161 - 2¹⁸ = 1562738017 is a prime.

It is not a weakly prime, because it can be changed into another prime (1563000151) 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, 781500080 + 781500081.

It is an arithmetic number, because the mean of its divisors is an integer number (781500081).

Almost surely, 2^1563000161 is an apocalyptic number.

It is an amenable number.

1563000161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1563000161 is an equidigital number, since it uses as much as digits as its factorization.

1563000161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 1563000161 is about 39534.7968377226. The cubic root of 1563000161 is about 1160.5210107523.

The spelling of 1563000161 in words is "one billion, five hundred sixty-three million, one hundred sixty-one", and thus it is an aban number.