118791 has 12 divisors (see below), whose sum is σ = 175032. Its totient is φ = 77616.

The previous prime is 118787. The next prime is 118799. The reversal of 118791 is 197811.

It is not a de Polignac number, because 118791 - 2² = 118787 is a prime.

It is a super-2 number, since 2×118791² = 28222603362, which contains 22 as substring.

118791 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 505 + ... + 701.

It is an arithmetic number, because the mean of its divisors is an integer number (14586).

2¹¹⁸⁷⁹¹ is an apocalyptic number.

118791 is a deficient number, since it is larger than the sum of its proper divisors (56241).

118791 is a wasteful number, since it uses less digits than its factorization.

118791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270 (or 267 counting only the distinct ones).

The product of its digits is 504, while the sum is 27.

The square root of 118791 is about 344.6607027208. The cubic root of 118791 is about 49.1580348088.

It can be divided in two parts, 118 and 791, that added together give a palindrome (909).

The spelling of 118791 in words is "one hundred eighteen thousand, seven hundred ninety-one".