1002005005 has 8 divisors (see below), whose sum is σ = 1254684672. Its totient is φ = 766751568.

The previous prime is 1002004951. The next prime is 1002005009. The reversal of 1002005005 is 5005002001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1002005005 - 2²³ = 993616397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002005009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4356429 + ... + 4356658.

It is an arithmetic number, because the mean of its divisors is an integer number (156835584).

Almost surely, 2^1002005005 is an apocalyptic number.

It is an amenable number.

1002005005 is a deficient number, since it is larger than the sum of its proper divisors (252679667).

1002005005 is an equidigital number, since it uses as much as digits as its factorization.

1002005005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8713115.

The product of its (nonzero) digits is 50, while the sum is 13.

The square root of 1002005005 is about 31654.4626395711. The cubic root of 1002005005 is about 1000.6678888252.

Adding to 1002005005 its reverse (5005002001), we get a palindrome (6007007006).

The spelling of 1002005005 in words is "one billion, two million, five thousand, five".