816698193 has 16 divisors (see below), whose sum is σ = 1135658496. Its totient is φ = 521464320.

The previous prime is 816698177. The next prime is 816698251. The reversal of 816698193 is 391896618.

816698193 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 816698193 - 2⁴ = 816698177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (816698293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36246 + ... + 54287.

It is an arithmetic number, because the mean of its divisors is an integer number (70978656).

Almost surely, 2^816698193 is an apocalyptic number.

It is an amenable number.

816698193 is a deficient number, since it is larger than the sum of its proper divisors (318960303).

816698193 is a wasteful number, since it uses less digits than its factorization.

816698193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90664.

The product of its digits is 559872, while the sum is 51.

The square root of 816698193 is about 28577.9319230766. The cubic root of 816698193 is about 934.7321882566.

The spelling of 816698193 in words is "eight hundred sixteen million, six hundred ninety-eight thousand, one hundred ninety-three".