9659951485 has 4 divisors (see below), whose sum is σ = 11591941788. Its totient is φ = 7727961184.

The previous prime is 9659951459. The next prime is 9659951489. The reversal of 9659951485 is 5841599569.

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 5916224889 + 3743726596 = 76917^2 + 61186^2 .

It is a cyclic number.

It is not a de Polignac number, because 9659951485 - 2⁹ = 9659950973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9659951489) 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, 965995144 + ... + 965995153.

It is an arithmetic number, because the mean of its divisors is an integer number (2897985447).

Almost surely, 2^9659951485 is an apocalyptic number.

It is an amenable number.

9659951485 is a deficient number, since it is larger than the sum of its proper divisors (1931990303).

9659951485 is a wasteful number, since it uses less digits than its factorization.

9659951485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1931990302.

The product of its digits is 17496000, while the sum is 61.

The square root of 9659951485 is about 98285.0521951329. The cubic root of 9659951485 is about 2129.7321244675.

The spelling of 9659951485 in words is "nine billion, six hundred fifty-nine million, nine hundred fifty-one thousand, four hundred eighty-five".