965535881 has 2 divisors, whose sum is σ = 965535882. Its totient is φ = 965535880.

The previous prime is 965535871. The next prime is 965535919. The reversal of 965535881 is 188535569.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 871135225 + 94400656 = 29515^2 + 9716^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-965535881 is a prime.

It is a super-2 number, since 2×965535881² = 1864519074996892322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (965535841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 482767940 + 482767941.

It is an arithmetic number, because the mean of its divisors is an integer number (482767941).

Almost surely, 2^965535881 is an apocalyptic number.

It is an amenable number.

965535881 is a deficient number, since it is larger than the sum of its proper divisors (1).

965535881 is an equidigital number, since it uses as much as digits as its factorization.

965535881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296000, while the sum is 50.

The square root of 965535881 is about 31073.0732467839. The cubic root of 965535881 is about 988.3773988210.

The spelling of 965535881 in words is "nine hundred sixty-five million, five hundred thirty-five thousand, eight hundred eighty-one".