30638740548 has 48 divisors (see below), whose sum is σ = 81041750720. Its totient is φ = 8931129984.

The previous prime is 30638740537. The next prime is 30638740549. The reversal of 30638740548 is 84504783603.

It is a junction number, because it is equal to n+sod(n) for n = 30638740497 and 30638740506.

It is not an unprimeable number, because it can be changed into a prime (30638740549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5165515 + ... + 5171442.

Almost surely, 2^30638740548 is an apocalyptic number.

30638740548 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

30638740548 is an abundant number, since it is smaller than the sum of its proper divisors (50403010172).

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

30638740548 is a wasteful number, since it uses less digits than its factorization.

30638740548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10336996 (or 10336994 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 48.

The spelling of 30638740548 in words is "thirty billion, six hundred thirty-eight million, seven hundred forty thousand, five hundred forty-eight".