1045453209 has 4 divisors (see below), whose sum is σ = 1393937616. Its totient is φ = 696968804.

The previous prime is 1045453177. The next prime is 1045453217. The reversal of 1045453209 is 9023545401.

1045453209 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1045453209 - 2⁵ = 1045453177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1045453209.

It is not an unprimeable number, because it can be changed into a prime (1045453609) 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, 174242199 + ... + 174242204.

It is an arithmetic number, because the mean of its divisors is an integer number (348484404).

Almost surely, 2^1045453209 is an apocalyptic number.

It is an amenable number.

1045453209 is a deficient number, since it is larger than the sum of its proper divisors (348484407).

1045453209 is an equidigital number, since it uses as much as digits as its factorization.

1045453209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348484406.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 1045453209 is about 32333.4688674135. The cubic root of 1045453209 is about 1014.9271414291.

The spelling of 1045453209 in words is "one billion, forty-five million, four hundred fifty-three thousand, two hundred nine".