30280481389 has 4 divisors (see below), whose sum is σ = 30301237120. Its totient is φ = 30259725660.

The previous prime is 30280481359. The next prime is 30280481423. The reversal of 30280481389 is 98318408203.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98318408203 = 221719 ⋅443437.

It is a cyclic number.

It is not a de Polignac number, because 30280481389 - 2¹⁵ = 30280448621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30280481359) 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, 10375677 + ... + 10378594.

It is an arithmetic number, because the mean of its divisors is an integer number (7575309280).

Almost surely, 2^30280481389 is an apocalyptic number.

It is an amenable number.

30280481389 is a deficient number, since it is larger than the sum of its proper divisors (20755731).

30280481389 is a wasteful number, since it uses less digits than its factorization.

30280481389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20755730.

The product of its (nonzero) digits is 331776, while the sum is 46.

The spelling of 30280481389 in words is "thirty billion, two hundred eighty million, four hundred eighty-one thousand, three hundred eighty-nine".