30838984847 has 4 divisors (see below), whose sum is σ = 33642528936. Its totient is φ = 28035440760.

The previous prime is 30838984817. The next prime is 30838984871. The reversal of 30838984847 is 74848983803.

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

It is a cyclic number.

It is not a de Polignac number, because 30838984847 - 2¹⁰ = 30838983823 is a prime.

It is a super-2 number, since 2×30838984847² (a number of 22 digits) contains 22 as substring.

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 30838984847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30838984807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1401772028 + ... + 1401772049.

It is an arithmetic number, because the mean of its divisors is an integer number (8410632234).

Almost surely, 2^30838984847 is an apocalyptic number.

30838984847 is a deficient number, since it is larger than the sum of its proper divisors (2803544089).

30838984847 is a wasteful number, since it uses less digits than its factorization.

30838984847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2803544088.

The product of its (nonzero) digits is 37158912, while the sum is 62.

The spelling of 30838984847 in words is "thirty billion, eight hundred thirty-eight million, nine hundred eighty-four thousand, eight hundred forty-seven".