118809305 has 16 divisors (see below), whose sum is σ = 146122704. Its totient is φ = 92701440.

The previous prime is 118809293. The next prime is 118809359. The reversal of 118809305 is 503908811.

It can be written as a sum of positive squares in 8 ways, for example, as 10086976 + 108722329 = 3176^2 + 10427^2 .

It is not a de Polignac number, because 118809305 - 2⁴ = 118809289 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46727 + ... + 49203.

It is an arithmetic number, because the mean of its divisors is an integer number (9132669).

Almost surely, 2^118809305 is an apocalyptic number.

It is an amenable number.

118809305 is a deficient number, since it is larger than the sum of its proper divisors (27313399).

118809305 is a wasteful number, since it uses less digits than its factorization.

118809305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2716.

The product of its (nonzero) digits is 8640, while the sum is 35.

The square root of 118809305 is about 10899.9681192194. The cubic root of 118809305 is about 491.6055966792.

The spelling of 118809305 in words is "one hundred eighteen million, eight hundred nine thousand, three hundred five".