1933994575920 has 80 divisors (see below), whose sum is σ = 6540418029312. Its totient is φ = 468847169280.

The previous prime is 1933994575907. The next prime is 1933994575937. The reversal of 1933994575920 is 295754993391.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 366284212 + ... + 366289491.

Almost surely, 2^{1933994575920} is an apocalyptic number.

1933994575920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1933994575920 is an abundant number, since it is smaller than the sum of its proper divisors (4606423453392).

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

1933994575920 is a wasteful number, since it uses less digits than its factorization.

1933994575920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732573730 (or 732573724 counting only the distinct ones).

The product of its (nonzero) digits is 82668600, while the sum is 66.

The spelling of 1933994575920 in words is "one trillion, nine hundred thirty-three billion, nine hundred ninety-four million, five hundred seventy-five thousand, nine hundred twenty".