197165803 has 2 divisors, whose sum is σ = 197165804. Its totient is φ = 197165802.

The previous prime is 197165767. The next prime is 197165819. The reversal of 197165803 is 308561791.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197165803 is a prime.

It is not a weakly prime, because it can be changed into another prime (197165203) 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, 98582901 + 98582902.

It is an arithmetic number, because the mean of its divisors is an integer number (98582902).

Almost surely, 2^197165803 is an apocalyptic number.

197165803 is a deficient number, since it is larger than the sum of its proper divisors (1).

197165803 is an equidigital number, since it uses as much as digits as its factorization.

197165803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 197165803 is about 14041.5740926721. The cubic root of 197165803 is about 582.0279811223.

The spelling of 197165803 in words is "one hundred ninety-seven million, one hundred sixty-five thousand, eight hundred three".