2001000002 has 16 divisors (see below), whose sum is σ = 3050023032. Its totient is φ = 984445440.

The previous prime is 2000999999. The next prime is 2001000013. The reversal of 2001000002 is 2000001002.

It can be written as a sum of positive squares in 4 ways, for example, as 2000862361 + 137641 = 44731^2 + 371^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2001000002.

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, 3752 + ... + 63372.

Almost surely, 2^2001000002 is an apocalyptic number.

2001000002 is a deficient number, since it is larger than the sum of its proper divisors (1049023030).

2001000002 is a wasteful number, since it uses less digits than its factorization.

2001000002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59893.

The product of its (nonzero) digits is 4, while the sum is 5.

The square root of 2001000002 is about 44732.5385150452. The cubic root of 2001000002 is about 1260.1310021683.

Adding to 2001000002 its reverse (2000001002), we get a palindrome (4001001004).

The spelling of 2001000002 in words is "two billion, one million, two", and thus it is an aban number and an uban number.