118265109 has 16 divisors (see below), whose sum is σ = 159709440. Its totient is φ = 77837760.

The previous prime is 118265089. The next prime is 118265111. The reversal of 118265109 is 901562811.

It is not a de Polignac number, because 118265109 - 2¹⁵ = 118232341 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 118265109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118265129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129364 + ... + 130274.

It is an arithmetic number, because the mean of its divisors is an integer number (9981840).

Almost surely, 2^118265109 is an apocalyptic number.

It is an amenable number.

118265109 is a deficient number, since it is larger than the sum of its proper divisors (41444331).

118265109 is a wasteful number, since it uses less digits than its factorization.

118265109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1420.

The product of its (nonzero) digits is 4320, while the sum is 33.

The square root of 118265109 is about 10874.9762758362. The cubic root of 118265109 is about 490.8538617659.

The spelling of 118265109 in words is "one hundred eighteen million, two hundred sixty-five thousand, one hundred nine".