856424518 has 8 divisors (see below), whose sum is σ = 1291363200. Its totient is φ = 425970120.

The previous prime is 856424501. The next prime is 856424537. The reversal of 856424518 is 815424658.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1120593 + ... + 1121356.

It is an arithmetic number, because the mean of its divisors is an integer number (161420400).

Almost surely, 2^856424518 is an apocalyptic number.

856424518 is a deficient number, since it is larger than the sum of its proper divisors (434938682).

856424518 is a wasteful number, since it uses less digits than its factorization.

856424518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2242142.

The product of its digits is 307200, while the sum is 43.

The square root of 856424518 is about 29264.7316406626. The cubic root of 856424518 is about 949.6488149770.

The spelling of 856424518 in words is "eight hundred fifty-six million, four hundred twenty-four thousand, five hundred eighteen".