7818746226 has 16 divisors (see below), whose sum is σ = 15662762400. Its totient is φ = 2602037088.

The previous prime is 7818746203. The next prime is 7818746261. The reversal of 7818746226 is 6226478187.

It is a super-2 number, since 2×7818746226² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1048891 + ... + 1056318.

It is an arithmetic number, because the mean of its divisors is an integer number (978922650).

Almost surely, 2^7818746226 is an apocalyptic number.

7818746226 is an abundant number, since it is smaller than the sum of its proper divisors (7844016174).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7818746226 is a wasteful number, since it uses less digits than its factorization.

7818746226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2105833.

The product of its digits is 1806336, while the sum is 51.

The square root of 7818746226 is about 88423.6745787009. The cubic root of 7818746226 is about 1984.7799882628.

The spelling of 7818746226 in words is "seven billion, eight hundred eighteen million, seven hundred forty-six thousand, two hundred twenty-six".