3986016646 has 16 divisors (see below), whose sum is σ = 5995252800. Its totient is φ = 1987607808.

The previous prime is 3986016641. The next prime is 3986016649. The reversal of 3986016646 is 6466106893.

It is a self number, because there is not a number n which added to its sum of digits gives 3986016646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3986016641) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1535926 + ... + 1538518.

It is an arithmetic number, because the mean of its divisors is an integer number (374703300).

Almost surely, 2^3986016646 is an apocalyptic number.

3986016646 is a deficient number, since it is larger than the sum of its proper divisors (2009236154).

3986016646 is a wasteful number, since it uses less digits than its factorization.

3986016646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4383.

The product of its (nonzero) digits is 1119744, while the sum is 49.

The square root of 3986016646 is about 63134.9082996087. The cubic root of 3986016646 is about 1585.5491263737.

The spelling of 3986016646 in words is "three billion, nine hundred eighty-six million, sixteen thousand, six hundred forty-six".