30788018648 has 16 divisors (see below), whose sum is σ = 57821105880. Its totient is φ = 15369057088.

The previous prime is 30788018647. The next prime is 30788018659. The reversal of 30788018648 is 84681088703.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 30788018648.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30788018647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3113786 + ... + 3123657.

Almost surely, 2^30788018648 is an apocalyptic number.

It is an amenable number.

30788018648 is a deficient number, since it is larger than the sum of its proper divisors (27033087232).

30788018648 is a wasteful number, since it uses less digits than its factorization.

30788018648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6238066 (or 6238062 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 53.

The spelling of 30788018648 in words is "thirty billion, seven hundred eighty-eight million, eighteen thousand, six hundred forty-eight".