3857651964 has 36 divisors (see below), whose sum is σ = 9815878800. Its totient is φ = 1277366400.

The previous prime is 3857651921. The next prime is 3857651989. The reversal of 3857651964 is 4691567583.

3857651964 is a `hidden beast` number, since 3 + 8 + 576 + 5 + 1 + 9 + 64 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 3857651964.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 349389 + ... + 360260.

It is an arithmetic number, because the mean of its divisors is an integer number (272663300).

Almost surely, 2^3857651964 is an apocalyptic number.

It is an amenable number.

3857651964 is an abundant number, since it is smaller than the sum of its proper divisors (5958226836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3857651964 is a wasteful number, since it uses less digits than its factorization.

3857651964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709810 (or 709805 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The square root of 3857651964 is about 62109.9989051682. The cubic root of 3857651964 is about 1568.3428718601.

The spelling of 3857651964 in words is "three billion, eight hundred fifty-seven million, six hundred fifty-one thousand, nine hundred sixty-four".