3871584638 has 16 divisors (see below), whose sum is σ = 5941972080. Its totient is φ = 1891423296.

The previous prime is 3871584617. The next prime is 3871584697. The reversal of 3871584638 is 8364851783.

It is a self number, because there is not a number n which added to its sum of digits gives 3871584638.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 108293 + ... + 139536.

It is an arithmetic number, because the mean of its divisors is an integer number (371373255).

Almost surely, 2^3871584638 is an apocalyptic number.

3871584638 is a deficient number, since it is larger than the sum of its proper divisors (2070387442).

3871584638 is a wasteful number, since it uses less digits than its factorization.

3871584638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248011.

The product of its digits is 3870720, while the sum is 53.

The square root of 3871584638 is about 62222.0590948258. The cubic root of 3871584638 is about 1570.2287302490.

The spelling of 3871584638 in words is "three billion, eight hundred seventy-one million, five hundred eighty-four thousand, six hundred thirty-eight".