30389495209 has 4 divisors (see below), whose sum is σ = 30543756804. Its totient is φ = 30235233616.

The previous prime is 30389495203. The next prime is 30389495231. The reversal of 30389495209 is 90259498303.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17628403984 + 12761091225 = 132772^2 + 112965^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30389495209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30389495203) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 77130502 + ... + 77130895.

It is an arithmetic number, because the mean of its divisors is an integer number (7635939201).

Almost surely, 2^30389495209 is an apocalyptic number.

It is an amenable number.

30389495209 is a deficient number, since it is larger than the sum of its proper divisors (154261595).

30389495209 is a wasteful number, since it uses less digits than its factorization.

30389495209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154261594.

The product of its (nonzero) digits is 2099520, while the sum is 52.

The spelling of 30389495209 in words is "thirty billion, three hundred eighty-nine million, four hundred ninety-five thousand, two hundred nine".