2666226818 has 8 divisors (see below), whose sum is σ = 3999708300. Its totient is φ = 1332990720.

The previous prime is 2666226809. The next prime is 2666226839. The reversal of 2666226818 is 8186226662.

2666226818 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2652559009 + 13667809 = 51503^2 + 3697^2 .

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

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, 31223 + ... + 79418.

Almost surely, 2^2666226818 is an apocalyptic number.

2666226818 is a deficient number, since it is larger than the sum of its proper divisors (1333481482).

2666226818 is a wasteful number, since it uses less digits than its factorization.

2666226818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122692.

The product of its digits is 663552, while the sum is 47.

The square root of 2666226818 is about 51635.5189573999. The cubic root of 2666226818 is about 1386.6463010009.

The spelling of 2666226818 in words is "two billion, six hundred sixty-six million, two hundred twenty-six thousand, eight hundred eighteen".