7109009018 has 8 divisors (see below), whose sum is σ = 11031220980. Its totient is φ = 3431935360.

The previous prime is 7109009009. The next prime is 7109009053. The reversal of 7109009018 is 8109009017.

It can be written as a sum of positive squares in 2 ways, for example, as 6884518729 + 224490289 = 82973^2 + 14983^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61284503 + ... + 61284618.

Almost surely, 2^7109009018 is an apocalyptic number.

7109009018 is a deficient number, since it is larger than the sum of its proper divisors (3922211962).

7109009018 is a wasteful number, since it uses less digits than its factorization.

7109009018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122569152.

The product of its (nonzero) digits is 4536, while the sum is 35.

The square root of 7109009018 is about 84314.9394710095. The cubic root of 7109009018 is about 1922.8099244722.

Subtracting 7109009018 from its reverse (8109009017), we obtain a palindrome (999999999).

The spelling of 7109009018 in words is "seven billion, one hundred nine million, nine thousand, eighteen".