30008491938 has 12 divisors (see below), whose sum is σ = 65018399238. Its totient is φ = 10002830640.

The previous prime is 30008491921. The next prime is 30008491949. The reversal of 30008491938 is 83919480003.

It can be written as a sum of positive squares in only one way, i.e., 29488788729 + 519703209 = 171723^2 + 22797^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30008491893 and 30008491902.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 833569203 + ... + 833569238.

Almost surely, 2^30008491938 is an apocalyptic number.

30008491938 is an abundant number, since it is smaller than the sum of its proper divisors (35009907300).

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

30008491938 is a wasteful number, since it uses less digits than its factorization.

30008491938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1667138449 (or 1667138446 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The spelling of 30008491938 in words is "thirty billion, eight million, four hundred ninety-one thousand, nine hundred thirty-eight".