1965140304865 has 8 divisors (see below), whose sum is σ = 2375133606720. Its totient is φ = 1560802083312.

The previous prime is 1965140304859. The next prime is 1965140304893. The reversal of 1965140304865 is 5684030415691.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1965140304865 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1413769309 + ... + 1413770698.

It is an arithmetic number, because the mean of its divisors is an integer number (296891700840).

Almost surely, 2^{1965140304865} is an apocalyptic number.

It is an amenable number.

1965140304865 is a deficient number, since it is larger than the sum of its proper divisors (409993301855).

1965140304865 is a wasteful number, since it uses less digits than its factorization.

1965140304865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2827540151.

The product of its (nonzero) digits is 3110400, while the sum is 52.

The spelling of 1965140304865 in words is "one trillion, nine hundred sixty-five billion, one hundred forty million, three hundred four thousand, eight hundred sixty-five".