1045013209 has 2 divisors, whose sum is σ = 1045013210. Its totient is φ = 1045013208.

The previous prime is 1045013201. The next prime is 1045013279. The reversal of 1045013209 is 9023105401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1044905625 + 107584 = 32325^2 + 328^2 .

It is a cyclic number.

It is not a de Polignac number, because 1045013209 - 2³ = 1045013201 is a prime.

It is not a weakly prime, because it can be changed into another prime (1045013201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 522506604 + 522506605.

It is an arithmetic number, because the mean of its divisors is an integer number (522506605).

Almost surely, 2^1045013209 is an apocalyptic number.

It is an amenable number.

1045013209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1045013209 is an equidigital number, since it uses as much as digits as its factorization.

1045013209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 1045013209 is about 32326.6640561627. The cubic root of 1045013209 is about 1014.7847372858.

The spelling of 1045013209 in words is "one billion, forty-five million, thirteen thousand, two hundred nine".