1328922197 has 2 divisors, whose sum is σ = 1328922198. Its totient is φ = 1328922196.

The previous prime is 1328922169. The next prime is 1328922233. The reversal of 1328922197 is 7912298231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1321031716 + 7890481 = 36346^2 + 2809^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1328922197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1328922107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664461098 + 664461099.

It is an arithmetic number, because the mean of its divisors is an integer number (664461099).

Almost surely, 2^1328922197 is an apocalyptic number.

It is an amenable number.

1328922197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1328922197 is an equidigital number, since it uses as much as digits as its factorization.

1328922197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 44.

The square root of 1328922197 is about 36454.3851546011. The cubic root of 1328922197 is about 1099.4273043672.

The spelling of 1328922197 in words is "one billion, three hundred twenty-eight million, nine hundred twenty-two thousand, one hundred ninety-seven".