6918903944 has 8 divisors (see below), whose sum is σ = 12972944910. Its totient is φ = 3459451968.

The previous prime is 6918903913. The next prime is 6918903989. The reversal of 6918903944 is 4493098196.

It can be written as a sum of positive squares in only one way, i.e., 5619301444 + 1299602500 = 74962^2 + 36050^2 .

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

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, 432431489 + ... + 432431504.

Almost surely, 2^6918903944 is an apocalyptic number.

It is an amenable number.

6918903944 is a deficient number, since it is larger than the sum of its proper divisors (6054040966).

6918903944 is a wasteful number, since it uses less digits than its factorization.

6918903944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864862999 (or 864862995 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 53.

The square root of 6918903944 is about 83179.9491704581. The cubic root of 6918903944 is about 1905.5152716871.

The spelling of 6918903944 in words is "six billion, nine hundred eighteen million, nine hundred three thousand, nine hundred forty-four".