6918868244 has 18 divisors (see below), whose sum is σ = 12410551902. Its totient is φ = 3375054400.

The previous prime is 6918868237. The next prime is 6918868247. The reversal of 6918868244 is 4428688196.

It can be written as a sum of positive squares in 3 ways, for example, as 1553305744 + 5365562500 = 39412^2 + 73250^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6918868244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6918868247) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 507767 + ... + 521214.

Almost surely, 2^6918868244 is an apocalyptic number.

It is an amenable number.

6918868244 is a deficient number, since it is larger than the sum of its proper divisors (5491683658).

6918868244 is a wasteful number, since it uses less digits than its factorization.

6918868244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029067 (or 1029024 counting only the distinct ones).

The product of its digits is 5308416, while the sum is 56.

The square root of 6918868244 is about 83179.7345751957. The cubic root of 6918868244 is about 1905.5119943370.

The spelling of 6918868244 in words is "six billion, nine hundred eighteen million, eight hundred sixty-eight thousand, two hundred forty-four".