1285017163 has 2 divisors, whose sum is σ = 1285017164. Its totient is φ = 1285017162.

The previous prime is 1285017157. The next prime is 1285017221. The reversal of 1285017163 is 3617105821.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1285017163 - 2¹⁷ = 1284886091 is a prime.

It is not a weakly prime, because it can be changed into another prime (1285017113) 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, 642508581 + 642508582.

It is an arithmetic number, because the mean of its divisors is an integer number (642508582).

Almost surely, 2^1285017163 is an apocalyptic number.

1285017163 is a deficient number, since it is larger than the sum of its proper divisors (1).

1285017163 is an equidigital number, since it uses as much as digits as its factorization.

1285017163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 1285017163 is about 35847.1360501784. The cubic root of 1285017163 is about 1087.1838092170.

The spelling of 1285017163 in words is "one billion, two hundred eighty-five million, seventeen thousand, one hundred sixty-three".