30185747180 has 96 divisors (see below), whose sum is σ = 67828948992. Its totient is φ = 11264774400.

The previous prime is 30185747173. The next prime is 30185747201. The reversal of 30185747180 is 8174758103.

It is a super-2 number, since 2×30185747180² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1944650 + ... + 1960110.

It is an arithmetic number, because the mean of its divisors is an integer number (706551552).

Almost surely, 2^30185747180 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 30185747180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33914474496).

30185747180 is an abundant number, since it is smaller than the sum of its proper divisors (37643201812).

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

30185747180 is a wasteful number, since it uses less digits than its factorization.

30185747180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15615 (or 15613 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 44.

The spelling of 30185747180 in words is "thirty billion, one hundred eighty-five million, seven hundred forty-seven thousand, one hundred eighty".