197830729 has 2 divisors, whose sum is σ = 197830730. Its totient is φ = 197830728.

The previous prime is 197830723. The next prime is 197830769. The reversal of 197830729 is 927038791.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150013504 + 47817225 = 12248^2 + 6915^2 .

It is a cyclic number.

It is not a de Polignac number, because 197830729 - 2²⁷ = 63613001 is a prime.

It is not a weakly prime, because it can be changed into another prime (197830723) 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 as a sum of consecutive naturals, namely, 98915364 + 98915365.

It is an arithmetic number, because the mean of its divisors is an integer number (98915365).

Almost surely, 2^197830729 is an apocalyptic number.

It is an amenable number.

197830729 is a deficient number, since it is larger than the sum of its proper divisors (1).

197830729 is an equidigital number, since it uses as much as digits as its factorization.

197830729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 190512, while the sum is 46.

The square root of 197830729 is about 14065.2312103285. The cubic root of 197830729 is about 582.6815280293.

The spelling of 197830729 in words is "one hundred ninety-seven million, eight hundred thirty thousand, seven hundred twenty-nine".