1982625781892 has 24 divisors (see below), whose sum is σ = 3965505633600. Its totient is φ = 849642320160.

The previous prime is 1982625781853. The next prime is 1982625781907. The reversal of 1982625781892 is 2981875262891.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1822142 + ... + 2699157.

It is an arithmetic number, because the mean of its divisors is an integer number (165229401400).

Almost surely, 2^{1982625781892} is an apocalyptic number.

It is an amenable number.

1982625781892 is an abundant number, since it is smaller than the sum of its proper divisors (1982879851708).

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

1982625781892 is a wasteful number, since it uses less digits than its factorization.

1982625781892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4536971 (or 4536969 counting only the distinct ones).

The product of its digits is 69672960, while the sum is 68.

The spelling of 1982625781892 in words is "one trillion, nine hundred eighty-two billion, six hundred twenty-five million, seven hundred eighty-one thousand, eight hundred ninety-two".