856484018 has 16 divisors (see below), whose sum is σ = 1386032256. Its totient is φ = 394591440.

The previous prime is 856484009. The next prime is 856484023. The reversal of 856484018 is 810484658.

It is a self number, because there is not a number n which added to its sum of digits gives 856484018.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14618 + ... + 43893.

It is an arithmetic number, because the mean of its divisors is an integer number (86627016).

Almost surely, 2^856484018 is an apocalyptic number.

856484018 is a deficient number, since it is larger than the sum of its proper divisors (529548238).

856484018 is a wasteful number, since it uses less digits than its factorization.

856484018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59089.

The product of its (nonzero) digits is 245760, while the sum is 44.

The square root of 856484018 is about 29265.7482050263. The cubic root of 856484018 is about 949.6708067170.

The spelling of 856484018 in words is "eight hundred fifty-six million, four hundred eighty-four thousand, eighteen".