9657982465 has 4 divisors (see below), whose sum is σ = 11589578964. Its totient is φ = 7726385968.

The previous prime is 9657982459. The next prime is 9657982469. The reversal of 9657982465 is 5642897569.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2556212481 + 7101769984 = 50559^2 + 84272^2 .

It is a cyclic number.

It is not a de Polignac number, because 9657982465 - 2³ = 9657982457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9657982469) 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, 965798242 + ... + 965798251.

It is an arithmetic number, because the mean of its divisors is an integer number (2897394741).

Almost surely, 2^9657982465 is an apocalyptic number.

It is an amenable number.

9657982465 is a deficient number, since it is larger than the sum of its proper divisors (1931596499).

9657982465 is a wasteful number, since it uses less digits than its factorization.

9657982465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1931596498.

The product of its digits is 32659200, while the sum is 61.

The square root of 9657982465 is about 98275.0348002991. The cubic root of 9657982465 is about 2129.5874111768.

The spelling of 9657982465 in words is "nine billion, six hundred fifty-seven million, nine hundred eighty-two thousand, four hundred sixty-five".