118838863909 has 12 divisors (see below), whose sum is σ = 122822577228. Its totient is φ = 114980497920.

The previous prime is 118838863867. The next prime is 118838863961. The reversal of 118838863909 is 909368838811.

It can be written as a sum of positive squares in 2 ways, for example, as 50026032225 + 68812831684 = 223665^2 + 262322^2 .

It is not a de Polignac number, because 118838863909 - 2²⁵ = 118805309477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118838863999) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5710447 + ... + 5731219.

It is an arithmetic number, because the mean of its divisors is an integer number (10235214769).

Almost surely, 2^118838863909 is an apocalyptic number.

It is an amenable number.

118838863909 is a deficient number, since it is larger than the sum of its proper divisors (3983713319).

118838863909 is an equidigital number, since it uses as much as digits as its factorization.

118838863909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26788 (or 26757 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 64.

The spelling of 118838863909 in words is "one hundred eighteen billion, eight hundred thirty-eight million, eight hundred sixty-three thousand, nine hundred nine".