856918468 has 36 divisors (see below), whose sum is σ = 1836261840. Its totient is φ = 347920272.

The previous prime is 856918463. The next prime is 856918471. The reversal of 856918468 is 864819658.

It is not an unprimeable number, because it can be changed into a prime (856918463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111330 + ... + 118777.

Almost surely, 2^856918468 is an apocalyptic number.

It is an amenable number.

856918468 is an abundant number, since it is smaller than the sum of its proper divisors (979343372).

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

856918468 is a wasteful number, since it uses less digits than its factorization.

856918468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230144 (or 230135 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 55.

The square root of 856918468 is about 29273.1697634540. The cubic root of 856918468 is about 949.8313525190.

The spelling of 856918468 in words is "eight hundred fifty-six million, nine hundred eighteen thousand, four hundred sixty-eight".