8001001003 has 2 divisors, whose sum is σ = 8001001004. Its totient is φ = 8001001002.

The previous prime is 8001000971. The next prime is 8001001051. The reversal of 8001001003 is 3001001008.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8001001003 - 2⁵ = 8001000971 is a prime.

It is not a weakly prime, because it can be changed into another prime (8001001093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4000500501 + 4000500502.

It is an arithmetic number, because the mean of its divisors is an integer number (4000500502).

Almost surely, 2^8001001003 is an apocalyptic number.

8001001003 is a deficient number, since it is larger than the sum of its proper divisors (1).

8001001003 is an equidigital number, since it uses as much as digits as its factorization.

8001001003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 8001001003 is about 89448.3147018433. The cubic root of 8001001003 is about 2000.0834134377.

The spelling of 8001001003 in words is "eight billion, one million, one thousand, three".