197286470813 has 2 divisors, whose sum is σ = 197286470814. Its totient is φ = 197286470812.

The previous prime is 197286470809. The next prime is 197286470893. The reversal of 197286470813 is 318074682791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 176468886724 + 20817584089 = 420082^2 + 144283^2 .

It is an emirp because it is prime and its reverse (318074682791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 197286470813 - 2² = 197286470809 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197286470803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98643235406 + 98643235407.

It is an arithmetic number, because the mean of its divisors is an integer number (98643235407).

Almost surely, 2^197286470813 is an apocalyptic number.

It is an amenable number.

197286470813 is a deficient number, since it is larger than the sum of its proper divisors (1).

197286470813 is an equidigital number, since it uses as much as digits as its factorization.

197286470813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4064256, while the sum is 56.

The spelling of 197286470813 in words is "one hundred ninety-seven billion, two hundred eighty-six million, four hundred seventy thousand, eight hundred thirteen".