3876391664 has 40 divisors (see below), whose sum is σ = 7954074240. Its totient is φ = 1826244288.

The previous prime is 3876391639. The next prime is 3876391709. The reversal of 3876391664 is 4661936783.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53954 + ... + 103265.

It is an arithmetic number, because the mean of its divisors is an integer number (198851856).

Almost surely, 2^3876391664 is an apocalyptic number.

It is an amenable number.

3876391664 is an abundant number, since it is smaller than the sum of its proper divisors (4077682576).

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

3876391664 is a wasteful number, since it uses less digits than its factorization.

3876391664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157317 (or 157311 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 53.

The square root of 3876391664 is about 62260.6751007408. The cubic root of 3876391664 is about 1570.8783357920.

The spelling of 3876391664 in words is "three billion, eight hundred seventy-six million, three hundred ninety-one thousand, six hundred sixty-four".