115891218 has 48 divisors (see below), whose sum is σ = 255449376. Its totient is φ = 37968000.

The previous prime is 115891211. The next prime is 115891219. The reversal of 115891218 is 812198511.

It is not an unprimeable number, because it can be changed into a prime (115891211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 461593 + ... + 461843.

It is an arithmetic number, because the mean of its divisors is an integer number (5321862).

Almost surely, 2^115891218 is an apocalyptic number.

115891218 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

115891218 is an abundant number, since it is smaller than the sum of its proper divisors (139558158).

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

115891218 is a wasteful number, since it uses less digits than its factorization.

115891218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599 (or 596 counting only the distinct ones).

The product of its digits is 5760, while the sum is 36.

The square root of 115891218 is about 10765.2783521839. The cubic root of 115891218 is about 487.5473973640.

The spelling of 115891218 in words is "one hundred fifteen million, eight hundred ninety-one thousand, two hundred eighteen".