30381830181920 has 192 divisors, whose sum is σ = 82255424541696. Its totient is φ = 10388144532480.

The previous prime is 30381830181917. The next prime is 30381830181949. The reversal of 30381830181920 is 2918103818303.

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 31 ways as a sum of consecutive naturals, for example, 1124781215 + ... + 1124808225.

It is an arithmetic number, because the mean of its divisors is an integer number (428413669488).

Almost surely, 2^{30381830181920} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30381830181920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41127712270848).

30381830181920 is an abundant number, since it is smaller than the sum of its proper divisors (51873594359776).

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

30381830181920 is a wasteful number, since it uses less digits than its factorization.

30381830181920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29743 (or 29735 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 47.

The spelling of 30381830181920 in words is "thirty trillion, three hundred eighty-one billion, eight hundred thirty million, one hundred eighty-one thousand, nine hundred twenty".