3913555671 has 24 divisors (see below), whose sum is σ = 5689314176. Its totient is φ = 2592285120.

The previous prime is 3913555649. The next prime is 3913555697. The reversal of 3913555671 is 1765553193.

3913555671 is a `hidden beast` number, since 3 + 91 + 3 + 5 + 556 + 7 + 1 = 666.

It is not a de Polignac number, because 3913555671 - 2⁷ = 3913555543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3913555871) 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 23 ways as a sum of consecutive naturals, for example, 1228701 + ... + 1231881.

Almost surely, 2^3913555671 is an apocalyptic number.

3913555671 is a deficient number, since it is larger than the sum of its proper divisors (1775758505).

3913555671 is a wasteful number, since it uses less digits than its factorization.

3913555671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4023 (or 4020 counting only the distinct ones).

The product of its digits is 425250, while the sum is 45.

The square root of 3913555671 is about 62558.4180666359. The cubic root of 3913555671 is about 1575.8825215787.

The spelling of 3913555671 in words is "three billion, nine hundred thirteen million, five hundred fifty-five thousand, six hundred seventy-one".