1002445013 has 4 divisors (see below), whose sum is σ = 1002819948. Its totient is φ = 1002070080.

The previous prime is 1002444991. The next prime is 1002445019. The reversal of 1002445013 is 3105442001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 507916369 + 494528644 = 22537^2 + 22238^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002445013 - 2¹⁰ = 1002443989 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 (1002445019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183428 + ... + 188813.

It is an arithmetic number, because the mean of its divisors is an integer number (250704987).

Almost surely, 2^1002445013 is an apocalyptic number.

It is an amenable number.

1002445013 is a deficient number, since it is larger than the sum of its proper divisors (374935).

1002445013 is an equidigital number, since it uses as much as digits as its factorization.

1002445013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374934.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1002445013 is about 31661.4120500018. The cubic root of 1002445013 is about 1000.8143410021.

Adding to 1002445013 its reverse (3105442001), we get a palindrome (4107887014).

The spelling of 1002445013 in words is "one billion, two million, four hundred forty-five thousand, thirteen".