3198317897 has 2 divisors, whose sum is σ = 3198317898. Its totient is φ = 3198317896.

The previous prime is 3198317893. The next prime is 3198317911. The reversal of 3198317897 is 7987138913.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3097033801 + 101284096 = 55651^2 + 10064^2 .

It is a cyclic number.

It is not a de Polignac number, because 3198317897 - 2² = 3198317893 is a prime.

It is not a weakly prime, because it can be changed into another prime (3198317891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1599158948 + 1599158949.

It is an arithmetic number, because the mean of its divisors is an integer number (1599158949).

Almost surely, 2^3198317897 is an apocalyptic number.

It is an amenable number.

3198317897 is a deficient number, since it is larger than the sum of its proper divisors (1).

3198317897 is an equidigital number, since it uses as much as digits as its factorization.

3198317897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2286144, while the sum is 56.

The square root of 3198317897 is about 56553.6727100902. The cubic root of 3198317897 is about 1473.3543491823.

The spelling of 3198317897 in words is "three billion, one hundred ninety-eight million, three hundred seventeen thousand, eight hundred ninety-seven".