2384947857 has 4 divisors (see below), whose sum is σ = 3179930480. Its totient is φ = 1589965236.

The previous prime is 2384947853. The next prime is 2384947883. The reversal of 2384947857 is 7587494832.

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.

It is not a de Polignac number, because 2384947857 - 2² = 2384947853 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2384947797 and 2384947806.

It is not an unprimeable number, because it can be changed into a prime (2384947853) 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, 397491307 + ... + 397491312.

It is an arithmetic number, because the mean of its divisors is an integer number (794982620).

Almost surely, 2^2384947857 is an apocalyptic number.

It is an amenable number.

2384947857 is a deficient number, since it is larger than the sum of its proper divisors (794982623).

2384947857 is an equidigital number, since it uses as much as digits as its factorization.

2384947857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794982622.

The product of its digits is 13547520, while the sum is 57.

The square root of 2384947857 is about 48835.9279322099. The cubic root of 2384947857 is about 1336.0610280323.

The spelling of 2384947857 in words is "two billion, three hundred eighty-four million, nine hundred forty-seven thousand, eight hundred fifty-seven".