3648661876 has 12 divisors (see below), whose sum is σ = 6385668772. Its totient is φ = 1824185088.

The previous prime is 3648661831. The next prime is 3648661909. The reversal of 3648661876 is 6781668463.

It can be written as a sum of positive squares in 2 ways, for example, as 176624100 + 3472037776 = 13290^2 + 58924^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 35686 + ... + 92578.

Almost surely, 2^3648661876 is an apocalyptic number.

It is an amenable number.

3648661876 is a deficient number, since it is larger than the sum of its proper divisors (2737006896).

3648661876 is a wasteful number, since it uses less digits than its factorization.

3648661876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72930 (or 72928 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 55.

The square root of 3648661876 is about 60404.1544597721. The cubic root of 3648661876 is about 1539.4935474120.

The spelling of 3648661876 in words is "three billion, six hundred forty-eight million, six hundred sixty-one thousand, eight hundred seventy-six".