118898005 has 4 divisors (see below), whose sum is σ = 142677612. Its totient is φ = 95118400.

The previous prime is 118897997. The next prime is 118898009. The reversal of 118898005 is 500898811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 500898811 = 7 ⋅71556973.

It can be written as a sum of positive squares in 2 ways, for example, as 93837969 + 25060036 = 9687^2 + 5006^2 .

It is not a de Polignac number, because 118898005 - 2³ = 118897997 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118898009) 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, 11889796 + ... + 11889805.

It is an arithmetic number, because the mean of its divisors is an integer number (35669403).

Almost surely, 2^118898005 is an apocalyptic number.

It is an amenable number.

118898005 is a deficient number, since it is larger than the sum of its proper divisors (23779607).

118898005 is an equidigital number, since it uses as much as digits as its factorization.

118898005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23779606.

The product of its (nonzero) digits is 23040, while the sum is 40.

The square root of 118898005 is about 10904.0361793237. The cubic root of 118898005 is about 491.7279063175.

The spelling of 118898005 in words is "one hundred eighteen million, eight hundred ninety-eight thousand, five".