118500489121 has 9 divisors (see below), whose sum is σ = 137850310899. Its totient is φ = 101569782384.

The previous prime is 118500489097. The next prime is 118500489143. The reversal of 118500489121 is 121984005811.

The square root of 118500489121 is 344239.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 24290781025 + 94209708096 = 155855^2 + 306936^2 .

It is not a de Polignac number, because 118500489121 - 2⁷ = 118500488993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (118500489181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2385085 + ... + 2434261.

It is an arithmetic number, because the mean of its divisors is an integer number (15316701211).

Almost surely, 2^118500489121 is an apocalyptic number.

118500489121 is the 344239-th square number.

118500489121 is the 172120-th centered octagonal number.

It is an amenable number.

118500489121 is a deficient number, since it is larger than the sum of its proper divisors (19349821778).

118500489121 is an frugal number, since it uses more digits than its factorization.

118500489121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98368 (or 49184 counting only the distinct ones).

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

The spelling of 118500489121 in words is "one hundred eighteen billion, five hundred million, four hundred eighty-nine thousand, one hundred twenty-one".