861200163 has 6 divisors (see below), whose sum is σ = 1243955804. Its totient is φ = 574133436.

The previous prime is 861200159. The next prime is 861200177. The reversal of 861200163 is 361002168.

It is not a de Polignac number, because 861200163 - 2² = 861200159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (861200113) 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 in 5 ways as a sum of consecutive naturals, for example, 47844445 + ... + 47844462.

Almost surely, 2^861200163 is an apocalyptic number.

861200163 is a deficient number, since it is larger than the sum of its proper divisors (382755641).

861200163 is a wasteful number, since it uses less digits than its factorization.

861200163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95688913 (or 95688910 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 861200163 is about 29346.2120724294. The cubic root of 861200163 is about 951.4107067133.

The spelling of 861200163 in words is "eight hundred sixty-one million, two hundred thousand, one hundred sixty-three".