8965532161 has 8 divisors (see below), whose sum is σ = 9013049864. Its totient is φ = 8918138880.

The previous prime is 8965532159. The next prime is 8965532167. The reversal of 8965532161 is 1612355698.

It can be written as a sum of positive squares in 4 ways, for example, as 1040400 + 8964491761 = 1020^2 + 94681^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8965532161 - 2¹ = 8965532159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8965532167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115201 + ... + 176641.

It is an arithmetic number, because the mean of its divisors is an integer number (1126631233).

Almost surely, 2^8965532161 is an apocalyptic number.

It is an amenable number.

8965532161 is a deficient number, since it is larger than the sum of its proper divisors (47517703).

8965532161 is a wasteful number, since it uses less digits than its factorization.

8965532161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62211.

The product of its digits is 388800, while the sum is 46.

The square root of 8965532161 is about 94686.4940791452. The cubic root of 8965532161 is about 2077.4250187667.

The spelling of 8965532161 in words is "eight billion, nine hundred sixty-five million, five hundred thirty-two thousand, one hundred sixty-one".