9509997500 has 30 divisors (see below), whose sum is σ = 20796468000. Its totient is φ = 3803998000.

The previous prime is 9509997493. The next prime is 9509997587. The reversal of 9509997500 is 57999059.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1899500 + ... + 1904499.

It is an arithmetic number, because the mean of its divisors is an integer number (693215600).

Almost surely, 2^9509997500 is an apocalyptic number.

It is an amenable number.

9509997500 is an abundant number, since it is smaller than the sum of its proper divisors (11286470500).

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

9509997500 is a wasteful number, since it uses less digits than its factorization.

9509997500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3804023 (or 3804006 counting only the distinct ones).

The product of its (nonzero) digits is 1148175, while the sum is 53.

The square root of 9509997500 is about 97519.2160550935. The cubic root of 9509997500 is about 2118.6544728266.

The spelling of 9509997500 in words is "nine billion, five hundred nine million, nine hundred ninety-seven thousand, five hundred".