115820863 has 4 divisors (see below), whose sum is σ = 116230408. Its totient is φ = 115411320.

The previous prime is 115820821. The next prime is 115820891. The reversal of 115820863 is 368028511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 115820863 - 2⁹ = 115820351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115820963) 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 3 ways as a sum of consecutive naturals, for example, 204348 + ... + 204913.

It is an arithmetic number, because the mean of its divisors is an integer number (29057602).

Almost surely, 2^115820863 is an apocalyptic number.

115820863 is a deficient number, since it is larger than the sum of its proper divisors (409545).

115820863 is an equidigital number, since it uses as much as digits as its factorization.

115820863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409544.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 115820863 is about 10762.0101746839. The cubic root of 115820863 is about 487.4487176387.

The spelling of 115820863 in words is "one hundred fifteen million, eight hundred twenty thousand, eight hundred sixty-three".