856163862 has 48 divisors (see below), whose sum is σ = 1877249088. Its totient is φ = 281988720.

The previous prime is 856163849. The next prime is 856163863. The reversal of 856163862 is 268361658.

856163862 is a `hidden beast` number, since 8 + 5 + 6 + 1 + 638 + 6 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856163863) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 666673 + ... + 667955.

It is an arithmetic number, because the mean of its divisors is an integer number (39109356).

Almost surely, 2^856163862 is an apocalyptic number.

856163862 is an abundant number, since it is smaller than the sum of its proper divisors (1021085226).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

856163862 is a wasteful number, since it uses less digits than its factorization.

856163862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1705 (or 1702 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 856163862 is about 29260.2778865820. The cubic root of 856163862 is about 949.5524621469.

The spelling of 856163862 in words is "eight hundred fifty-six million, one hundred sixty-three thousand, eight hundred sixty-two".