7218289718 has 32 divisors (see below), whose sum is σ = 11406528000. Its totient is φ = 3421214496.

The previous prime is 7218289717. The next prime is 7218289733. The reversal of 7218289718 is 8179828127.

It is a self number, because there is not a number n which added to its sum of digits gives 7218289718.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7218289717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 780083 + ... + 789281.

It is an arithmetic number, because the mean of its divisors is an integer number (356454000).

Almost surely, 2^7218289718 is an apocalyptic number.

7218289718 is a deficient number, since it is larger than the sum of its proper divisors (4188238282).

7218289718 is a wasteful number, since it uses less digits than its factorization.

7218289718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9476.

The product of its digits is 903168, while the sum is 53.

The square root of 7218289718 is about 84960.5185836339. The cubic root of 7218289718 is about 1932.6124356326.

The spelling of 7218289718 in words is "seven billion, two hundred eighteen million, two hundred eighty-nine thousand, seven hundred eighteen".