4002000646 has 16 divisors (see below), whose sum is σ = 6868380960. Its totient is φ = 1713191040.

The previous prime is 4002000631. The next prime is 4002000649. The reversal of 4002000646 is 6460002004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4002000649) 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, 149901 + ... + 174568.

It is an arithmetic number, because the mean of its divisors is an integer number (429273810).

Almost surely, 2^4002000646 is an apocalyptic number.

4002000646 is a deficient number, since it is larger than the sum of its proper divisors (2866380314).

4002000646 is a wasteful number, since it uses less digits than its factorization.

4002000646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325359.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 4002000646 is about 63261.3677215408. The cubic root of 4002000646 is about 1587.6656601546.

The spelling of 4002000646 in words is "four billion, two million, six hundred forty-six", and thus it is an aban number.