1009209836 has 12 divisors (see below), whose sum is σ = 1823088960. Its totient is φ = 488327280.

The previous prime is 1009209797. The next prime is 1009209841. The reversal of 1009209836 is 6389029001.

It is a self number, because there is not a number n which added to its sum of digits gives 1009209836.

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, 4069271 + ... + 4069518.

It is an arithmetic number, because the mean of its divisors is an integer number (151924080).

Almost surely, 2^1009209836 is an apocalyptic number.

It is an amenable number.

1009209836 is a deficient number, since it is larger than the sum of its proper divisors (813879124).

1009209836 is a wasteful number, since it uses less digits than its factorization.

1009209836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8138824 (or 8138822 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 1009209836 is about 31768.0631452407. The cubic root of 1009209836 is about 1003.0605686964.

The spelling of 1009209836 in words is "one billion, nine million, two hundred nine thousand, eight hundred thirty-six".