863243161 has 9 divisors (see below), whose sum is σ = 949209429. Its totient is φ = 784472700.

The previous prime is 863243159. The next prime is 863243167. The reversal of 863243161 is 161342368.

It is a happy number.

The square root of 863243161 is 29381.

It is a perfect power (a square), and thus also a powerful number.

863243161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 863243161 - 2¹ = 863243159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (863243167) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 321856 + ... + 324526.

Almost surely, 2^863243161 is an apocalyptic number.

863243161 is the 29381-st square number.

863243161 is the 14691-st centered octagonal number.

It is an amenable number.

863243161 is a deficient number, since it is larger than the sum of its proper divisors (85966268).

863243161 is an frugal number, since it uses more digits than its factorization.

863243161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5364 (or 2682 counting only the distinct ones).

The product of its digits is 20736, while the sum is 34.

The cubic root of 863243161 is about 952.1624464599.

Multiplying 863243161 by its product of digits (20736), we get a square (17900210186496 = 4230864²).

The spelling of 863243161 in words is "eight hundred sixty-three million, two hundred forty-three thousand, one hundred sixty-one".