3938263063837 has 2 divisors, whose sum is σ = 3938263063838. Its totient is φ = 3938263063836.

The previous prime is 3938263063811. The next prime is 3938263063963. The reversal of 3938263063837 is 7383603628393.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3880844840196 + 57418223641 = 1969986^2 + 239621^2 .

It is a cyclic number.

It is not a de Polignac number, because 3938263063837 - 2³⁹ = 3388507249949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3938263063037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1969131531918 + 1969131531919.

It is an arithmetic number, because the mean of its divisors is an integer number (1969131531919).

Almost surely, 2^{3938263063837} is an apocalyptic number.

It is an amenable number.

3938263063837 is a deficient number, since it is larger than the sum of its proper divisors (1).

3938263063837 is an equidigital number, since it uses as much as digits as its factorization.

3938263063837 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70543872, while the sum is 61.

The spelling of 3938263063837 in words is "three trillion, nine hundred thirty-eight billion, two hundred sixty-three million, sixty-three thousand, eight hundred thirty-seven".