816353853 has 8 divisors (see below), whose sum is σ = 1243967808. Its totient is φ = 466487904.

The previous prime is 816353833. The next prime is 816353861. The reversal of 816353853 is 358353618.

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

It is not a de Polignac number, because 816353853 - 2⁹ = 816353341 is a prime.

It is a super-2 number, since 2×816353853² = 1332867226615891218, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816353803) 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 7 ways as a sum of consecutive naturals, for example, 19436976 + ... + 19437017.

It is an arithmetic number, because the mean of its divisors is an integer number (155495976).

Almost surely, 2^816353853 is an apocalyptic number.

It is an amenable number.

816353853 is a deficient number, since it is larger than the sum of its proper divisors (427613955).

816353853 is a wasteful number, since it uses less digits than its factorization.

816353853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38874003.

The product of its digits is 259200, while the sum is 42.

The square root of 816353853 is about 28571.9067092135. The cubic root of 816353853 is about 934.6008011132.

The spelling of 816353853 in words is "eight hundred sixteen million, three hundred fifty-three thousand, eight hundred fifty-three".