810849838 has 8 divisors (see below), whose sum is σ = 1231670880. Its totient is φ = 400292880.

The previous prime is 810849811. The next prime is 810849899. The reversal of 810849838 is 838948018.

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

It is a junction number, because it is equal to n+sod(n) for n = 810849791 and 810849800.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2565823 + ... + 2566138.

It is an arithmetic number, because the mean of its divisors is an integer number (153958860).

Almost surely, 2^810849838 is an apocalyptic number.

810849838 is a deficient number, since it is larger than the sum of its proper divisors (420821042).

810849838 is a wasteful number, since it uses less digits than its factorization.

810849838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5132042.

The product of its (nonzero) digits is 442368, while the sum is 49.

The square root of 810849838 is about 28475.4251592492. The cubic root of 810849838 is about 932.4956433035.

The spelling of 810849838 in words is "eight hundred ten million, eight hundred forty-nine thousand, eight hundred thirty-eight".