1009205648 has 40 divisors (see below), whose sum is σ = 2173360896. Its totient is φ = 450070400.

The previous prime is 1009205647. The next prime is 1009205689. The reversal of 1009205648 is 8465029001.

It is not an unprimeable number, because it can be changed into a prime (1009205641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44768 + ... + 63423.

Almost surely, 2^1009205648 is an apocalyptic number.

It is an amenable number.

1009205648 is an abundant number, since it is smaller than the sum of its proper divisors (1164155248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1009205648 is a wasteful number, since it uses less digits than its factorization.

1009205648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108263 (or 108257 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 1009205648 is about 31767.9972299168. The cubic root of 1009205648 is about 1003.0591812005.

The spelling of 1009205648 in words is "one billion, nine million, two hundred five thousand, six hundred forty-eight".