115816365 has 32 divisors (see below), whose sum is σ = 235311360. Its totient is φ = 52944192.

The previous prime is 115816361. The next prime is 115816373. The reversal of 115816365 is 563618511.

115816365 is a `hidden beast` number, since 1 + 15 + 8 + 1 + 636 + 5 = 666.

It is not a de Polignac number, because 115816365 - 2² = 115816361 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115816361) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60334 + ... + 62223.

It is an arithmetic number, because the mean of its divisors is an integer number (7353480).

Almost surely, 2^115816365 is an apocalyptic number.

115816365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

115816365 is an abundant number, since it is smaller than the sum of its proper divisors (119494995).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

115816365 is a wasteful number, since it uses less digits than its factorization.

115816365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122578 (or 122572 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 115816365 is about 10761.8011968257. The cubic root of 115816365 is about 487.4424073975.

The spelling of 115816365 in words is "one hundred fifteen million, eight hundred sixteen thousand, three hundred sixty-five".