4928321857 has 4 divisors (see below), whose sum is σ = 5098264020. Its totient is φ = 4758379696.

The previous prime is 4928321851. The next prime is 4928321887. The reversal of 4928321857 is 7581238294.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1150498561 + 3777823296 = 33919^2 + 61464^2 .

It is a cyclic number.

It is not a de Polignac number, because 4928321857 - 2¹⁵ = 4928289089 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 4928321857.

It is not an unprimeable number, because it can be changed into a prime (4928321851) 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, 84971038 + ... + 84971095.

It is an arithmetic number, because the mean of its divisors is an integer number (1274566005).

Almost surely, 2^4928321857 is an apocalyptic number.

It is an amenable number.

4928321857 is a deficient number, since it is larger than the sum of its proper divisors (169942163).

4928321857 is a wasteful number, since it uses less digits than its factorization.

4928321857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169942162.

The product of its digits is 967680, while the sum is 49.

The square root of 4928321857 is about 70202.0074997859. The cubic root of 4928321857 is about 1701.7653929384.

The spelling of 4928321857 in words is "four billion, nine hundred twenty-eight million, three hundred twenty-one thousand, eight hundred fifty-seven".