115986618 has 24 divisors (see below), whose sum is σ = 274150656. Its totient is φ = 35147400.

The previous prime is 115986617. The next prime is 115986623. The reversal of 115986618 is 816689511.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (115986617) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 292698 + ... + 293093.

It is an arithmetic number, because the mean of its divisors is an integer number (11422944).

Almost surely, 2^115986618 is an apocalyptic number.

115986618 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

115986618 is an abundant number, since it is smaller than the sum of its proper divisors (158164038).

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

115986618 is a wasteful number, since it uses less digits than its factorization.

115986618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585810 (or 585807 counting only the distinct ones).

The product of its digits is 103680, while the sum is 45.

The square root of 115986618 is about 10769.7083525971. The cubic root of 115986618 is about 487.6811413631.

The spelling of 115986618 in words is "one hundred fifteen million, nine hundred eighty-six thousand, six hundred eighteen".