856018036 has 6 divisors (see below), whose sum is σ = 1498031570. Its totient is φ = 428009016.

The previous prime is 856017997. The next prime is 856018067. The reversal of 856018036 is 630810658.

It can be written as a sum of positive squares in only one way, i.e., 852990436 + 3027600 = 29206^2 + 1740^2 .

It is a junction number, because it is equal to n+sod(n) for n = 856017986 and 856018004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107002251 + ... + 107002258.

Almost surely, 2^856018036 is an apocalyptic number.

It is an amenable number.

856018036 is a deficient number, since it is larger than the sum of its proper divisors (642013534).

856018036 is a wasteful number, since it uses less digits than its factorization.

856018036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214004513 (or 214004511 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 856018036 is about 29257.7859039265. The cubic root of 856018036 is about 949.4985482854.

The spelling of 856018036 in words is "eight hundred fifty-six million, eighteen thousand, thirty-six".