3872644768 has 24 divisors (see below), whose sum is σ = 7628458068. Its totient is φ = 1935258624.

The previous prime is 3872644697. The next prime is 3872644799. The reversal of 3872644768 is 8674462783.

It can be written as a sum of positive squares in 2 ways, for example, as 3232149904 + 640494864 = 56852^2 + 25308^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27630 + ... + 92242.

Almost surely, 2^3872644768 is an apocalyptic number.

It is an amenable number.

3872644768 is a deficient number, since it is larger than the sum of its proper divisors (3755813300).

3872644768 is a wasteful number, since it uses less digits than its factorization.

3872644768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66496 (or 66488 counting only the distinct ones).

The product of its digits is 10838016, while the sum is 55.

The square root of 3872644768 is about 62230.5774358554. The cubic root of 3872644768 is about 1570.3720388959.

The spelling of 3872644768 in words is "three billion, eight hundred seventy-two million, six hundred forty-four thousand, seven hundred sixty-eight".