118134909 has 8 divisors (see below), whose sum is σ = 175014720. Its totient is φ = 78756588.

The previous prime is 118134859. The next prime is 118134943. The reversal of 118134909 is 909431811.

It is not a de Polignac number, because 118134909 - 2⁷ = 118134781 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118134949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2187657 + ... + 2187710.

It is an arithmetic number, because the mean of its divisors is an integer number (21876840).

Almost surely, 2^118134909 is an apocalyptic number.

It is an amenable number.

118134909 is a deficient number, since it is larger than the sum of its proper divisors (56879811).

118134909 is an equidigital number, since it uses as much as digits as its factorization.

118134909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4375376 (or 4375370 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 118134909 is about 10868.9884073910. The cubic root of 118134909 is about 490.6736659314.

The spelling of 118134909 in words is "one hundred eighteen million, one hundred thirty-four thousand, nine hundred nine".