30478681148 has 12 divisors (see below), whose sum is σ = 53340849240. Its totient is φ = 15238438512.

The previous prime is 30478681117. The next prime is 30478681193. The reversal of 30478681148 is 84118687403.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 30478681096 and 30478681105.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 146411 + ... + 287042.

It is an arithmetic number, because the mean of its divisors is an integer number (4445070770).

Almost surely, 2^30478681148 is an apocalyptic number.

It is an amenable number.

30478681148 is a deficient number, since it is larger than the sum of its proper divisors (22862168092).

30478681148 is a wasteful number, since it uses less digits than its factorization.

30478681148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451036 (or 451034 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 50.

The spelling of 30478681148 in words is "thirty billion, four hundred seventy-eight million, six hundred eighty-one thousand, one hundred forty-eight".