1965196834557 has 96 divisors (see below), whose sum is σ = 2982891147264. Its totient is φ = 1141180876800.

The previous prime is 1965196834543. The next prime is 1965196834577. The reversal of 1965196834557 is 7554386915691.

It is not a de Polignac number, because 1965196834557 - 2⁶ = 1965196834493 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1965196834491 and 1965196834500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1965196834577) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 977222682 + ... + 977224692.

It is an arithmetic number, because the mean of its divisors is an integer number (31071782784).

Almost surely, 2^{1965196834557} is an apocalyptic number.

It is an amenable number.

1965196834557 is a deficient number, since it is larger than the sum of its proper divisors (1017694312707).

1965196834557 is a wasteful number, since it uses less digits than its factorization.

1965196834557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2419 (or 2382 counting only the distinct ones).

The product of its digits is 244944000, while the sum is 69.

The spelling of 1965196834557 in words is "one trillion, nine hundred sixty-five billion, one hundred ninety-six million, eight hundred thirty-four thousand, five hundred fifty-seven".