30686739385 has 8 divisors (see below), whose sum is σ = 36830790216. Its totient is φ = 24544922880.

The previous prime is 30686739367. The next prime is 30686739397. The reversal of 30686739385 is 58393768603.

It can be written as a sum of positive squares in 4 ways, for example, as 7070119056 + 23616620329 = 84084^2 + 153677^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30686739385 - 2¹¹ = 30686737337 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 528214 + ... + 583423.

It is an arithmetic number, because the mean of its divisors is an integer number (4603848777).

Almost surely, 2^30686739385 is an apocalyptic number.

It is an amenable number.

30686739385 is a deficient number, since it is larger than the sum of its proper divisors (6144050831).

30686739385 is a wasteful number, since it uses less digits than its factorization.

30686739385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117163.

The product of its (nonzero) digits is 19595520, while the sum is 58.

The spelling of 30686739385 in words is "thirty billion, six hundred eighty-six million, seven hundred thirty-nine thousand, three hundred eighty-five".