197836823 has 16 divisors (see below), whose sum is σ = 214050816. Its totient is φ = 182313120.

The previous prime is 197836819. The next prime is 197836829. The reversal of 197836823 is 328638791.

It is a cyclic number.

It is not a de Polignac number, because 197836823 - 2² = 197836819 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 (197836829) 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 15 ways as a sum of consecutive naturals, for example, 208436 + ... + 209382.

It is an arithmetic number, because the mean of its divisors is an integer number (13378176).

Almost surely, 2^197836823 is an apocalyptic number.

197836823 is a deficient number, since it is larger than the sum of its proper divisors (16213993).

197836823 is a wasteful number, since it uses less digits than its factorization.

197836823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294.

The product of its digits is 435456, while the sum is 47.

The square root of 197836823 is about 14065.4478421414. The cubic root of 197836823 is about 582.6875109636.

The spelling of 197836823 in words is "one hundred ninety-seven million, eight hundred thirty-six thousand, eight hundred twenty-three".