3871771957 has 8 divisors (see below), whose sum is σ = 3915362880. Its totient is φ = 3828296640.

The previous prime is 3871771867. The next prime is 3871771963. The reversal of 3871771957 is 7591771783.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3871771957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3871771898 and 3871771907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3871771157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39357 + ... + 96397.

It is an arithmetic number, because the mean of its divisors is an integer number (489420360).

Almost surely, 2^3871771957 is an apocalyptic number.

It is an amenable number.

3871771957 is a deficient number, since it is larger than the sum of its proper divisors (43590923).

3871771957 is a wasteful number, since it uses less digits than its factorization.

3871771957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57803.

The product of its digits is 2593080, while the sum is 55.

The square root of 3871771957 is about 62223.5643225298. The cubic root of 3871771957 is about 1570.2540539825.

The spelling of 3871771957 in words is "three billion, eight hundred seventy-one million, seven hundred seventy-one thousand, nine hundred fifty-seven".