118811115 has 48 divisors (see below), whose sum is σ = 214643520. Its totient is φ = 60721920.

The previous prime is 118811111. The next prime is 118811131. The reversal of 118811115 is 511118811.

It is not a de Polignac number, because 118811115 - 2² = 118811111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (118811111) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 235954 + ... + 236456.

It is an arithmetic number, because the mean of its divisors is an integer number (4471740).

Almost surely, 2^118811115 is an apocalyptic number.

118811115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

118811115 is a deficient number, since it is larger than the sum of its proper divisors (95832405).

118811115 is a wasteful number, since it uses less digits than its factorization.

118811115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724 (or 721 counting only the distinct ones).

The product of its digits is 320, while the sum is 27.

The square root of 118811115 is about 10900.0511466690. The cubic root of 118811115 is about 491.6080931212.

Adding to 118811115 its reverse (511118811), we get a palindrome (629929926).

It can be divided in two parts, 11881 and 1115, that added together give a square (12996 = 114²).

The spelling of 118811115 in words is "one hundred eighteen million, eight hundred eleven thousand, one hundred fifteen".