863000161 has 2 divisors, whose sum is σ = 863000162. Its totient is φ = 863000160.

The previous prime is 863000143. The next prime is 863000207. The reversal of 863000161 is 161000368.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 800890000 + 62110161 = 28300^2 + 7881^2 .

It is a cyclic number.

It is not a de Polignac number, because 863000161 - 2⁵ = 863000129 is a prime.

It is not a weakly prime, because it can be changed into another prime (863000141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431500080 + 431500081.

It is an arithmetic number, because the mean of its divisors is an integer number (431500081).

Almost surely, 2^863000161 is an apocalyptic number.

It is an amenable number.

863000161 is a deficient number, since it is larger than the sum of its proper divisors (1).

863000161 is an equidigital number, since it uses as much as digits as its factorization.

863000161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 863000161 is about 29376.8643833885. The cubic root of 863000161 is about 952.0730945836.

The spelling of 863000161 in words is "eight hundred sixty-three million, one hundred sixty-one", and thus it is an aban number.