1009509534 has 48 divisors (see below), whose sum is σ = 2465851920. Its totient is φ = 305910000.

The previous prime is 1009509511. The next prime is 1009509551. The reversal of 1009509534 is 4359059001.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 70717 + ... + 83784.

It is an arithmetic number, because the mean of its divisors is an integer number (51371915).

Almost surely, 2^1009509534 is an apocalyptic number.

1009509534 is an abundant number, since it is smaller than the sum of its proper divisors (1456342386).

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

1009509534 is a wasteful number, since it uses less digits than its factorization.

1009509534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154534 (or 154517 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 1009509534 is about 31772.7797650756. The cubic root of 1009509534 is about 1003.1598495011.

The spelling of 1009509534 in words is "one billion, nine million, five hundred nine thousand, five hundred thirty-four".