118471897 has 6 divisors (see below), whose sum is σ = 125035818. Its totient is φ = 112236192.

The previous prime is 118471883. The next prime is 118471909. The reversal of 118471897 is 798174811.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 113614281 + 4857616 = 10659^2 + 2204^2 .

It is not a de Polignac number, because 118471897 - 2¹⁵ = 118439129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118471867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 163728 + ... + 164449.

It is an arithmetic number, because the mean of its divisors is an integer number (20839303).

Almost surely, 2^118471897 is an apocalyptic number.

It is an amenable number.

118471897 is a deficient number, since it is larger than the sum of its proper divisors (6563921).

118471897 is an equidigital number, since it uses as much as digits as its factorization.

118471897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328215 (or 328196 counting only the distinct ones).

The product of its digits is 112896, while the sum is 46.

The square root of 118471897 is about 10884.4796384577. The cubic root of 118471897 is about 491.1397831930.

The spelling of 118471897 in words is "one hundred eighteen million, four hundred seventy-one thousand, eight hundred ninety-seven".