30668631389 has 32 divisors (see below), whose sum is σ = 34932764160. Its totient is φ = 26685489600.

The previous prime is 30668631353. The next prime is 30668631391. The reversal of 30668631389 is 98313686603.

It is not a de Polignac number, because 30668631389 - 2¹⁶ = 30668565853 is a prime.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30668631389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30668631989) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3727322 + ... + 3735540.

It is an arithmetic number, because the mean of its divisors is an integer number (1091648880).

Almost surely, 2^30668631389 is an apocalyptic number.

It is an amenable number.

30668631389 is a deficient number, since it is larger than the sum of its proper divisors (4264132771).

30668631389 is a wasteful number, since it uses less digits than its factorization.

30668631389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8441.

The product of its (nonzero) digits is 3359232, while the sum is 53.

The spelling of 30668631389 in words is "thirty billion, six hundred sixty-eight million, six hundred thirty-one thousand, three hundred eighty-nine".