1284327197 has 2 divisors, whose sum is σ = 1284327198. Its totient is φ = 1284327196.

The previous prime is 1284327193. The next prime is 1284327229. The reversal of 1284327197 is 7917234821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1189284196 + 95043001 = 34486^2 + 9749^2 .

It is a cyclic number.

It is not a de Polignac number, because 1284327197 - 2² = 1284327193 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1284327193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642163598 + 642163599.

It is an arithmetic number, because the mean of its divisors is an integer number (642163599).

Almost surely, 2^1284327197 is an apocalyptic number.

It is an amenable number.

1284327197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1284327197 is an equidigital number, since it uses as much as digits as its factorization.

1284327197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 44.

The square root of 1284327197 is about 35837.5110324364. The cubic root of 1284327197 is about 1086.9891933576.

The spelling of 1284327197 in words is "one billion, two hundred eighty-four million, three hundred twenty-seven thousand, one hundred ninety-seven".