1009509512 has 16 divisors (see below), whose sum is σ = 2064906000. Its totient is φ = 458867920.

The previous prime is 1009509511. The next prime is 1009509551. The reversal of 1009509512 is 2159059001.

It is not an unprimeable number, because it can be changed into a prime (1009509511) 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, 5735762 + ... + 5735937.

It is an arithmetic number, because the mean of its divisors is an integer number (129056625).

Almost surely, 2^1009509512 is an apocalyptic number.

It is an amenable number.

1009509512 is an abundant number, since it is smaller than the sum of its proper divisors (1055396488).

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

1009509512 is a wasteful number, since it uses less digits than its factorization.

1009509512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11471716 (or 11471712 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 32.

The square root of 1009509512 is about 31772.7794188673. The cubic root of 1009509512 is about 1003.1598422139.

The spelling of 1009509512 in words is "one billion, nine million, five hundred nine thousand, five hundred twelve".