118371009 has 4 divisors (see below), whose sum is σ = 157828016. Its totient is φ = 78914004.

The previous prime is 118370981. The next prime is 118371013. The reversal of 118371009 is 900173811.

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 not a de Polignac number, because 118371009 - 2⁸ = 118370753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118371509) 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, 19728499 + ... + 19728504.

It is an arithmetic number, because the mean of its divisors is an integer number (39457004).

Almost surely, 2^118371009 is an apocalyptic number.

It is an amenable number.

118371009 is a deficient number, since it is larger than the sum of its proper divisors (39457007).

118371009 is an equidigital number, since it uses as much as digits as its factorization.

118371009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39457006.

The product of its (nonzero) digits is 1512, while the sum is 30.

The square root of 118371009 is about 10879.8441624869. The cubic root of 118371009 is about 491.0003290731. Note that the first 3 decimals are identical.

The spelling of 118371009 in words is "one hundred eighteen million, three hundred seventy-one thousand, nine".