9509965380 has 84 divisors (see below), whose sum is σ = 29942739372. Its totient is φ = 2535986880.

The previous prime is 9509965369. The next prime is 9509965417. The reversal of 9509965380 is 835699059.

9509965380 is a `hidden beast` number, since 9 + 509 + 9 + 6 + 53 + 80 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3010058496 + 6499906884 = 54864^2 + 80622^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 311551 + ... + 340710.

It is an arithmetic number, because the mean of its divisors is an integer number (356461183).

Almost surely, 2^9509965380 is an apocalyptic number.

9509965380 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

9509965380 is an abundant number, since it is smaller than the sum of its proper divisors (20432773992).

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

9509965380 is a wasteful number, since it uses less digits than its factorization.

9509965380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652288 (or 652271 counting only the distinct ones).

The product of its (nonzero) digits is 2624400, while the sum is 54.

The square root of 9509965380 is about 97519.0513694632. The cubic root of 9509965380 is about 2118.6520875734.

The spelling of 9509965380 in words is "nine billion, five hundred nine million, nine hundred sixty-five thousand, three hundred eighty".