985824227858 has 6 divisors (see below), whose sum is σ = 1478738448021. Its totient is φ = 492911411852.

The previous prime is 985824227831. The next prime is 985824227881. The reversal of 985824227858 is 858722428589.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 933818793649 + 52005434209 = 966343^2 + 228047^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=702077.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1053116 + ... + 1755192.

Almost surely, 2^985824227858 is an apocalyptic number.

985824227858 is a deficient number, since it is larger than the sum of its proper divisors (492914220163).

985824227858 is an frugal number, since it uses more digits than its factorization.

985824227858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404156 (or 702079 counting only the distinct ones).

The product of its digits is 206438400, while the sum is 68.

The spelling of 985824227858 in words is "nine hundred eighty-five billion, eight hundred twenty-four million, two hundred twenty-seven thousand, eight hundred fifty-eight".