7818263368 has 8 divisors (see below), whose sum is σ = 14659243830. Its totient is φ = 3909131680.

The previous prime is 7818263329. The next prime is 7818263413. The reversal of 7818263368 is 8633628187.

It can be written as a sum of positive squares in only one way, i.e., 7147349764 + 670913604 = 84542^2 + 25902^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×7818263368² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488641453 + ... + 488641468.

Almost surely, 2^7818263368 is an apocalyptic number.

It is an amenable number.

7818263368 is a deficient number, since it is larger than the sum of its proper divisors (6840980462).

7818263368 is a wasteful number, since it uses less digits than its factorization.

7818263368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977282927 (or 977282923 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 52.

The square root of 7818263368 is about 88420.9441704849. The cubic root of 7818263368 is about 1984.7391297672.

The spelling of 7818263368 in words is "seven billion, eight hundred eighteen million, two hundred sixty-three thousand, three hundred sixty-eight".