30518904309 has 12 divisors (see below), whose sum is σ = 42463103328. Its totient is φ = 19460404920.

The previous prime is 30518904301. The next prime is 30518904313. The reversal of 30518904309 is 90340981503.

It is not a de Polignac number, because 30518904309 - 2³ = 30518904301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30518904301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1440624 + ... + 1461654.

It is an arithmetic number, because the mean of its divisors is an integer number (3538591944).

Almost surely, 2^30518904309 is an apocalyptic number.

It is an amenable number.

30518904309 is a deficient number, since it is larger than the sum of its proper divisors (11944199019).

30518904309 is an frugal number, since it uses more digits than its factorization.

30518904309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42088 (or 21057 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 42.

The spelling of 30518904309 in words is "thirty billion, five hundred eighteen million, nine hundred four thousand, three hundred nine".