118791005 has 4 divisors (see below), whose sum is σ = 142549212. Its totient is φ = 95032800.

The previous prime is 118790993. The next prime is 118791007. The reversal of 118791005 is 500197811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 500197811 = 59 ⋅8477929.

It can be written as a sum of positive squares in 2 ways, for example, as 14485636 + 104305369 = 3806^2 + 10213^2 .

It is not a de Polignac number, because 118791005 - 2¹⁰ = 118789981 is a prime.

It is a super-2 number, since 2×118791005² = 28222605737820050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118791007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11879096 + ... + 11879105.

It is an arithmetic number, because the mean of its divisors is an integer number (35637303).

Almost surely, 2^118791005 is an apocalyptic number.

It is an amenable number.

118791005 is a deficient number, since it is larger than the sum of its proper divisors (23758207).

118791005 is an equidigital number, since it uses as much as digits as its factorization.

118791005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23758206.

The product of its (nonzero) digits is 2520, while the sum is 32.

The square root of 118791005 is about 10899.1286348955. The cubic root of 118791005 is about 491.5803549852.

The spelling of 118791005 in words is "one hundred eighteen million, seven hundred ninety-one thousand, five".