285838830845 has 4 divisors (see below), whose sum is σ = 343006597020. Its totient is φ = 228671064672.

The previous prime is 285838830839. The next prime is 285838830877. The reversal of 285838830845 is 548038838582.

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 121219563556 + 164619267289 = 348166^2 + 405733^2 .

It is a cyclic number.

It is not a de Polignac number, because 285838830845 - 2¹⁴ = 285838814461 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28583883080 + ... + 28583883089.

It is an arithmetic number, because the mean of its divisors is an integer number (85751649255).

Almost surely, 2^285838830845 is an apocalyptic number.

It is an amenable number.

285838830845 is a deficient number, since it is larger than the sum of its proper divisors (57167766175).

285838830845 is an equidigital number, since it uses as much as digits as its factorization.

285838830845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57167766174.

The product of its (nonzero) digits is 58982400, while the sum is 62.

The spelling of 285838830845 in words is "two hundred eighty-five billion, eight hundred thirty-eight million, eight hundred thirty thousand, eight hundred forty-five".