1965017930868 has 60 divisors (see below), whose sum is σ = 5137241390820. Its totient is φ = 654968187648.

The previous prime is 1965017930857. The next prime is 1965017930903. The reversal of 1965017930868 is 8680397105691.

1965017930868 is a `hidden beast` number, since 1 + 96 + 501 + 7 + 9 + 30 + 8 + 6 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1597185384804 + 367832546064 = 1263798^2 + 606492^2 .

It is a super-2 number, since 2×1965017930868² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5759830 + ... + 6091442.

It is an arithmetic number, because the mean of its divisors is an integer number (85620689847).

Almost surely, 2^{1965017930868} is an apocalyptic number.

1965017930868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1965017930868 is an abundant number, since it is smaller than the sum of its proper divisors (3172223459952).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1965017930868 is a wasteful number, since it uses less digits than its factorization.

1965017930868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349918 (or 349907 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 63.

The spelling of 1965017930868 in words is "one trillion, nine hundred sixty-five billion, seventeen million, nine hundred thirty thousand, eight hundred sixty-eight".