115187863 has 4 divisors (see below), whose sum is σ = 131643280. Its totient is φ = 98732448.

The previous prime is 115187851. The next prime is 115187873. The reversal of 115187863 is 368781511.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115187863 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 (115187803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8227698 + ... + 8227711.

It is an arithmetic number, because the mean of its divisors is an integer number (32910820).

Almost surely, 2^115187863 is an apocalyptic number.

115187863 is a deficient number, since it is larger than the sum of its proper divisors (16455417).

115187863 is an equidigital number, since it uses as much as digits as its factorization.

115187863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16455416.

The product of its digits is 40320, while the sum is 40.

The square root of 115187863 is about 10732.5608780011. The cubic root of 115187863 is about 486.5590711555.

The spelling of 115187863 in words is "one hundred fifteen million, one hundred eighty-seven thousand, eight hundred sixty-three".