3868971348491 has 2 divisors, whose sum is σ = 3868971348492. Its totient is φ = 3868971348490.

The previous prime is 3868971348443. The next prime is 3868971348553. The reversal of 3868971348491 is 1948431798683.

It is a weak prime.

It is an emirp because it is prime and its reverse (1948431798683) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3868971348491 is a prime.

It is not a weakly prime, because it can be changed into another prime (3868971348401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1934485674245 + 1934485674246.

It is an arithmetic number, because the mean of its divisors is an integer number (1934485674246).

Almost surely, 2^{3868971348491} is an apocalyptic number.

3868971348491 is a deficient number, since it is larger than the sum of its proper divisors (1).

3868971348491 is an equidigital number, since it uses as much as digits as its factorization.

3868971348491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 250822656, while the sum is 71.

The spelling of 3868971348491 in words is "three trillion, eight hundred sixty-eight billion, nine hundred seventy-one million, three hundred forty-eight thousand, four hundred ninety-one".