3913020031820 has 12 divisors (see below), whose sum is σ = 8217342066864. Its totient is φ = 1565208012720.

The previous prime is 3913020031801. The next prime is 3913020031897. The reversal of 3913020031820 is 281300203193.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97825500776 + ... + 97825500815.

It is an arithmetic number, because the mean of its divisors is an integer number (684778505572).

Almost surely, 2^{3913020031820} is an apocalyptic number.

It is an amenable number.

3913020031820 is an abundant number, since it is smaller than the sum of its proper divisors (4304322035044).

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

3913020031820 is a wasteful number, since it uses less digits than its factorization.

3913020031820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195651001600 (or 195651001598 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The spelling of 3913020031820 in words is "three trillion, nine hundred thirteen billion, twenty million, thirty-one thousand, eight hundred twenty".