118071609 has 4 divisors (see below), whose sum is σ = 157428816. Its totient is φ = 78714404.

The previous prime is 118071599. The next prime is 118071641. The reversal of 118071609 is 906170811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 118071609 - 2¹⁶ = 118006073 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 118071609.

It is not an unprimeable number, because it can be changed into a prime (118071649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19678599 + ... + 19678604.

It is an arithmetic number, because the mean of its divisors is an integer number (39357204).

Almost surely, 2^118071609 is an apocalyptic number.

It is an amenable number.

118071609 is a deficient number, since it is larger than the sum of its proper divisors (39357207).

118071609 is an equidigital number, since it uses as much as digits as its factorization.

118071609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39357206.

The product of its (nonzero) digits is 3024, while the sum is 33.

The square root of 118071609 is about 10866.0760626824. The cubic root of 118071609 is about 490.5860113662.

The spelling of 118071609 in words is "one hundred eighteen million, seventy-one thousand, six hundred nine".