30381813780 has 48 divisors (see below), whose sum is σ = 85122219840. Its totient is φ = 8096755968.

The previous prime is 30381813773. The next prime is 30381813797. The reversal of 30381813780 is 8731818303.

It is a congruent number.

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, 60814 + ... + 253893.

It is an arithmetic number, because the mean of its divisors is an integer number (1773379580).

Almost surely, 2^30381813780 is an apocalyptic number.

30381813780 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30381813780 is an abundant number, since it is smaller than the sum of its proper divisors (54740406060).

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

30381813780 is a wasteful number, since it uses less digits than its factorization.

30381813780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316328 (or 316326 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The spelling of 30381813780 in words is "thirty billion, three hundred eighty-one million, eight hundred thirteen thousand, seven hundred eighty".