305091047893 has 8 divisors (see below), whose sum is σ = 324486183168. Its totient is φ = 285856868544.

The previous prime is 305091047857. The next prime is 305091047903. The reversal of 305091047893 is 398740190503.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-305091047893 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 (305091647893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40235071 + ... + 40242652.

It is an arithmetic number, because the mean of its divisors is an integer number (40560772896).

Almost surely, 2^305091047893 is an apocalyptic number.

It is an amenable number.

305091047893 is a deficient number, since it is larger than the sum of its proper divisors (19395135275).

305091047893 is a wasteful number, since it uses less digits than its factorization.

305091047893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80477963.

The product of its (nonzero) digits is 816480, while the sum is 49.

The spelling of 305091047893 in words is "three hundred five billion, ninety-one million, forty-seven thousand, eight hundred ninety-three".