1965130565 has 8 divisors (see below), whose sum is σ = 2369334048. Its totient is φ = 1564652880.

The previous prime is 1965130561. The next prime is 1965130571. The reversal of 1965130565 is 5650315691.

It is a happy number.

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

It is not a de Polignac number, because 1965130565 - 2² = 1965130561 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 (1965130561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 930287 + ... + 932396.

It is an arithmetic number, because the mean of its divisors is an integer number (296166756).

Almost surely, 2^1965130565 is an apocalyptic number.

It is an amenable number.

1965130565 is a deficient number, since it is larger than the sum of its proper divisors (404203483).

1965130565 is a wasteful number, since it uses less digits than its factorization.

1965130565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1862899.

The product of its (nonzero) digits is 121500, while the sum is 41.

The square root of 1965130565 is about 44329.7931982544. The cubic root of 1965130565 is about 1252.5559573036. Note that the first 3 decimals are identical.

The spelling of 1965130565 in words is "one billion, nine hundred sixty-five million, one hundred thirty thousand, five hundred sixty-five".