1045369809 has 12 divisors (see below), whose sum is σ = 1647249552. Its totient is φ = 633557400.

The previous prime is 1045369807. The next prime is 1045369813. The reversal of 1045369809 is 9089635401.

It is a happy number.

1045369809 is a `hidden beast` number, since 104 + 536 + 9 + 8 + 0 + 9 = 666.

It is not a de Polignac number, because 1045369809 - 2¹ = 1045369807 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1045369807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5279547 + ... + 5279744.

It is an arithmetic number, because the mean of its divisors is an integer number (137270796).

Almost surely, 2^1045369809 is an apocalyptic number.

It is an amenable number.

1045369809 is a deficient number, since it is larger than the sum of its proper divisors (601879743).

1045369809 is a wasteful number, since it uses less digits than its factorization.

1045369809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10559308 (or 10559305 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 1045369809 is about 32332.1791563761. The cubic root of 1045369809 is about 1014.9001524404.

The spelling of 1045369809 in words is "one billion, forty-five million, three hundred sixty-nine thousand, eight hundred nine".