1965803888934 has 96 divisors (see below), whose sum is σ = 4474399378176. Its totient is φ = 646795743840.

The previous prime is 1965803888899. The next prime is 1965803888953. The reversal of 1965803888934 is 4398883085691.

1965803888934 is a `hidden beast` number, since 1 + 9 + 6 + 580 + 3 + 8 + 8 + 8 + 9 + 34 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14336319 + ... + 14472789.

It is an arithmetic number, because the mean of its divisors is an integer number (46608326856).

Almost surely, 2^{1965803888934} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1965803888934, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2237199689088).

1965803888934 is an abundant number, since it is smaller than the sum of its proper divisors (2508595489242).

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

1965803888934 is a wasteful number, since it uses less digits than its factorization.

1965803888934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136872 (or 136860 counting only the distinct ones).

The product of its (nonzero) digits is 358318080, while the sum is 72.

The spelling of 1965803888934 in words is "one trillion, nine hundred sixty-five billion, eight hundred three million, eight hundred eighty-eight thousand, nine hundred thirty-four".