30685590938 has 16 divisors (see below), whose sum is σ = 48463056000. Its totient is φ = 14531643072.

The previous prime is 30685590913. The next prime is 30685590959. The reversal of 30685590938 is 83909558603.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56018 + ... + 253986.

It is an arithmetic number, because the mean of its divisors is an integer number (3028941000).

Almost surely, 2^30685590938 is an apocalyptic number.

30685590938 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

30685590938 is a deficient number, since it is larger than the sum of its proper divisors (17777465062).

30685590938 is a wasteful number, since it uses less digits than its factorization.

30685590938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202069.

The product of its (nonzero) digits is 6998400, while the sum is 56.

It can be divided in two parts, 306855 and 90938, that added together give a palindrome (397793).

The spelling of 30685590938 in words is "thirty billion, six hundred eighty-five million, five hundred ninety thousand, nine hundred thirty-eight".