1001000001004 has 12 divisors (see below), whose sum is σ = 1754734247784. Its totient is φ = 499647358784.

The previous prime is 1001000000993. The next prime is 1001000001007. The reversal of 1001000001004 is 4001000001001.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1001000001007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213157789 + ... + 213162484.

It is an arithmetic number, because the mean of its divisors is an integer number (146227853982).

Almost surely, 2^{1001000001004} is an apocalyptic number.

It is an amenable number.

1001000001004 is a deficient number, since it is larger than the sum of its proper divisors (753734246780).

1001000001004 is a wasteful number, since it uses less digits than its factorization.

1001000001004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426320864 (or 426320862 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 1001000001004 its reverse (4001000001001), we get a palindrome (5002000002005).

The spelling of 1001000001004 in words is "one trillion, one billion, one thousand, four".