30309697180 has 144 divisors (see below), whose sum is σ = 77927947776. Its totient is φ = 9696931200.

The previous prime is 30309697147. The next prime is 30309697181. The reversal of 30309697180 is 8179690303.

It is a self number, because there is not a number n which added to its sum of digits gives 30309697180.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30309697181) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 3381705 + ... + 3390655.

It is an arithmetic number, because the mean of its divisors is an integer number (541166304).

Almost surely, 2^30309697180 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 30309697180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38963973888).

30309697180 is an abundant number, since it is smaller than the sum of its proper divisors (47618250596).

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

30309697180 is a wasteful number, since it uses less digits than its factorization.

30309697180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9072 (or 9051 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 46.

The spelling of 30309697180 in words is "thirty billion, three hundred nine million, six hundred ninety-seven thousand, one hundred eighty".