1045005205 has 4 divisors (see below), whose sum is σ = 1254006252. Its totient is φ = 836004160.

The previous prime is 1045005173. The next prime is 1045005211. The reversal of 1045005205 is 5025005401.

1045005205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 242642929 + 802362276 = 15577^2 + 28326^2 .

It is not a de Polignac number, because 1045005205 - 2⁵ = 1045005173 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104500516 + ... + 104500525.

It is an arithmetic number, because the mean of its divisors is an integer number (313501563).

Almost surely, 2^1045005205 is an apocalyptic number.

It is an amenable number.

1045005205 is a deficient number, since it is larger than the sum of its proper divisors (209001047).

1045005205 is an equidigital number, since it uses as much as digits as its factorization.

1045005205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209001046.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 1045005205 is about 32326.5402571942. The cubic root of 1045005205 is about 1014.7821464548.

The spelling of 1045005205 in words is "one billion, forty-five million, five thousand, two hundred five".