1957840033920 has 128 divisors (see below), whose sum is σ = 6270192780480. Its totient is φ = 519616204800.

The previous prime is 1957840033819. The next prime is 1957840033939. The reversal of 1957840033920 is 293300487591.

It is a tau number, because it is divible by the number of its divisors (128).

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 15 ways as a sum of consecutive naturals, for example, 2011251 + ... + 2821490.

Almost surely, 2^{1957840033920} is an apocalyptic number.

1957840033920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1957840033920 is an abundant number, since it is smaller than the sum of its proper divisors (4312352746560).

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

1957840033920 is a wasteful number, since it uses less digits than its factorization.

1957840033920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4832974 (or 4832962 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 51.

The spelling of 1957840033920 in words is "one trillion, nine hundred fifty-seven billion, eight hundred forty million, thirty-three thousand, nine hundred twenty".