30798431838 has 12 divisors (see below), whose sum is σ = 66729935688. Its totient is φ = 10266143940.

The previous prime is 30798431827. The next prime is 30798431899. The reversal of 30798431838 is 83813489703.

It is a congruent number.

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, 855511978 + ... + 855512013.

It is an arithmetic number, because the mean of its divisors is an integer number (5560827974).

Almost surely, 2^30798431838 is an apocalyptic number.

30798431838 is an abundant number, since it is smaller than the sum of its proper divisors (35931503850).

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

30798431838 is a wasteful number, since it uses less digits than its factorization.

30798431838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1711023999 (or 1711023996 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The spelling of 30798431838 in words is "thirty billion, seven hundred ninety-eight million, four hundred thirty-one thousand, eight hundred thirty-eight".