1965782140920 has 192 divisors, whose sum is σ = 7135061562720. Its totient is φ = 483884803584.

The previous prime is 1965782140913. The next prime is 1965782140939. The reversal of 1965782140920 is 290412875691.

It is a happy number.

1965782140920 is a `hidden beast` number, since 1 + 9 + 6 + 578 + 2 + 1 + 40 + 9 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7652139 + ... + 7904858.

Almost surely, 2^{1965782140920} is an apocalyptic number.

1965782140920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1965782140920 is an abundant number, since it is smaller than the sum of its proper divisors (5169279421800).

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

1965782140920 is a wasteful number, since it uses less digits than its factorization.

1965782140920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15557036 (or 15557020 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 1965782140920 in words is "one trillion, nine hundred sixty-five billion, seven hundred eighty-two million, one hundred forty thousand, nine hundred twenty".