6938738903938 has 16 divisors (see below), whose sum is σ = 10506624579000. Its totient is φ = 3436549068672.

The previous prime is 6938738903909. The next prime is 6938738903969. The reversal of 6938738903938 is 8393098378396.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4310245188769 + 2628493715169 = 2076113^2 + 1621263^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3831403 + ... + 5343886.

Almost surely, 2^{6938738903938} is an apocalyptic number.

6938738903938 is a deficient number, since it is larger than the sum of its proper divisors (3567885675062).

6938738903938 is a wasteful number, since it uses less digits than its factorization.

6938738903938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9178869.

The product of its (nonzero) digits is 1269789696, while the sum is 76.

The spelling of 6938738903938 in words is "six trillion, nine hundred thirty-eight billion, seven hundred thirty-eight million, nine hundred three thousand, nine hundred thirty-eight".