118845409 has 8 divisors (see below), whose sum is σ = 120901248. Its totient is φ = 116800320.

The previous prime is 118845403. The next prime is 118845473. The reversal of 118845409 is 904548811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 118845409 - 2²¹ = 116748257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118845403) 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, 21444 + ... + 26410.

It is an arithmetic number, because the mean of its divisors is an integer number (15112656).

Almost surely, 2^118845409 is an apocalyptic number.

It is an amenable number.

118845409 is a deficient number, since it is larger than the sum of its proper divisors (2055839).

118845409 is an equidigital number, since it uses as much as digits as its factorization.

118845409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5375.

The product of its (nonzero) digits is 46080, while the sum is 40.

The square root of 118845409 is about 10901.6241450529. The cubic root of 118845409 is about 491.6553883206.

The spelling of 118845409 in words is "one hundred eighteen million, eight hundred forty-five thousand, four hundred nine".