30020613839 has 4 divisors (see below), whose sum is σ = 30137425824. Its totient is φ = 29903801856.

The previous prime is 30020613829. The next prime is 30020613853. The reversal of 30020613839 is 93831602003.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93831602003 = 73 ⋅1285364411.

It is a cyclic number.

It is not a de Polignac number, because 30020613839 - 2¹² = 30020609743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30020613799 and 30020613808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30020613809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58405607 + ... + 58406120.

It is an arithmetic number, because the mean of its divisors is an integer number (7534356456).

Almost surely, 2^30020613839 is an apocalyptic number.

30020613839 is a deficient number, since it is larger than the sum of its proper divisors (116811985).

30020613839 is a wasteful number, since it uses less digits than its factorization.

30020613839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116811984.

The product of its (nonzero) digits is 23328, while the sum is 35.

The spelling of 30020613839 in words is "thirty billion, twenty million, six hundred thirteen thousand, eight hundred thirty-nine".