9509505894 has 128 divisors (see below), whose sum is σ = 25629696000. Its totient is φ = 2554684704.

The previous prime is 9509505881. The next prime is 9509505919. The reversal of 9509505894 is 4985059059.

9509505894 is a `hidden beast` number, since 9 + 5 + 0 + 9 + 50 + 589 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 9509505894.

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 63 ways as a sum of consecutive naturals, for example, 503677 + ... + 522215.

It is an arithmetic number, because the mean of its divisors is an integer number (200232000).

Almost surely, 2^9509505894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9509505894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12814848000).

9509505894 is an abundant number, since it is smaller than the sum of its proper divisors (16120190106).

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

9509505894 is a wasteful number, since it uses less digits than its factorization.

9509505894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18639 (or 18633 counting only the distinct ones).

The product of its (nonzero) digits is 2916000, while the sum is 54.

The square root of 9509505894 is about 97516.6954628796. The cubic root of 9509505894 is about 2118.6179652391.

The spelling of 9509505894 in words is "nine billion, five hundred nine million, five hundred five thousand, eight hundred ninety-four".