115818943 has 4 divisors (see below), whose sum is σ = 122631840. Its totient is φ = 109006048.

The previous prime is 115818929. The next prime is 115818949. The reversal of 115818943 is 349818511.

It is a happy number.

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 115818943 - 2²¹ = 113721791 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 115818896 and 115818905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115818949) 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, 3406423 + ... + 3406456.

It is an arithmetic number, because the mean of its divisors is an integer number (30657960).

Almost surely, 2^115818943 is an apocalyptic number.

115818943 is a deficient number, since it is larger than the sum of its proper divisors (6812897).

115818943 is an equidigital number, since it uses as much as digits as its factorization.

115818943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6812896.

The product of its digits is 34560, while the sum is 40.

The square root of 115818943 is about 10761.9209716481. The cubic root of 115818943 is about 487.4460240920.

The spelling of 115818943 in words is "one hundred fifteen million, eight hundred eighteen thousand, nine hundred forty-three".