816917853 has 8 divisors (see below), whose sum is σ = 1089397216. Its totient is φ = 544525200.

The previous prime is 816917851. The next prime is 816917879. The reversal of 816917853 is 358719618.

816917853 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 816917853 - 2¹ = 816917851 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816917851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4998 + ... + 40728.

It is an arithmetic number, because the mean of its divisors is an integer number (136174652).

Almost surely, 2^816917853 is an apocalyptic number.

It is an amenable number.

816917853 is a deficient number, since it is larger than the sum of its proper divisors (272479363).

816917853 is a wasteful number, since it uses less digits than its factorization.

816917853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43355.

The product of its digits is 362880, while the sum is 48.

The square root of 816917853 is about 28581.7748399220. The cubic root of 816917853 is about 934.8159829268.

The spelling of 816917853 in words is "eight hundred sixteen million, nine hundred seventeen thousand, eight hundred fifty-three".