985780163 has 2 divisors, whose sum is σ = 985780164. Its totient is φ = 985780162.

The previous prime is 985780087. The next prime is 985780171. The reversal of 985780163 is 361087589.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 985780163 - 2²⁸ = 717344707 is a prime.

It is not a weakly prime, because it can be changed into another prime (985780463) 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, 492890081 + 492890082.

It is an arithmetic number, because the mean of its divisors is an integer number (492890082).

Almost surely, 2^985780163 is an apocalyptic number.

985780163 is a deficient number, since it is larger than the sum of its proper divisors (1).

985780163 is an equidigital number, since it uses as much as digits as its factorization.

985780163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 47.

The square root of 985780163 is about 31397.1362229105. The cubic root of 985780163 is about 995.2374080602.

The spelling of 985780163 in words is "nine hundred eighty-five million, seven hundred eighty thousand, one hundred sixty-three".