3874128871 has 2 divisors, whose sum is σ = 3874128872. Its totient is φ = 3874128870.

The previous prime is 3874128857. The next prime is 3874128941. The reversal of 3874128871 is 1788214783.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3874128871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3874128851) by changing a digit.

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 as a sum of consecutive naturals, namely, 1937064435 + 1937064436.

It is an arithmetic number, because the mean of its divisors is an integer number (1937064436).

Almost surely, 2^3874128871 is an apocalyptic number.

3874128871 is a deficient number, since it is larger than the sum of its proper divisors (1).

3874128871 is an equidigital number, since it uses as much as digits as its factorization.

3874128871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 602112, while the sum is 49.

The square root of 3874128871 is about 62242.5005201430. The cubic root of 3874128871 is about 1570.5726163945.

The spelling of 3874128871 in words is "three billion, eight hundred seventy-four million, one hundred twenty-eight thousand, eight hundred seventy-one".