197323793 has 2 divisors, whose sum is σ = 197323794. Its totient is φ = 197323792.

The previous prime is 197323783. The next prime is 197323807. The reversal of 197323793 is 397323791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128300929 + 69022864 = 11327^2 + 8308^2 .

It is an emirp because it is prime and its reverse (397323791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 197323793 - 2⁸ = 197323537 is a prime.

It is not a weakly prime, because it can be changed into another prime (197323733) 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, 98661896 + 98661897.

It is an arithmetic number, because the mean of its divisors is an integer number (98661897).

Almost surely, 2^197323793 is an apocalyptic number.

It is an amenable number.

197323793 is a deficient number, since it is larger than the sum of its proper divisors (1).

197323793 is an equidigital number, since it uses as much as digits as its factorization.

197323793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 214326, while the sum is 44.

The square root of 197323793 is about 14047.1987598952. The cubic root of 197323793 is about 582.1834003160.

The spelling of 197323793 in words is "one hundred ninety-seven million, three hundred twenty-three thousand, seven hundred ninety-three".