1244210197 has 2 divisors, whose sum is σ = 1244210198. Its totient is φ = 1244210196.

The previous prime is 1244210189. The next prime is 1244210309. The reversal of 1244210197 is 7910124421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1123188196 + 121022001 = 33514^2 + 11001^2 .

It is a cyclic number.

It is not a de Polignac number, because 1244210197 - 2³ = 1244210189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1244210147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622105098 + 622105099.

It is an arithmetic number, because the mean of its divisors is an integer number (622105099).

Almost surely, 2^1244210197 is an apocalyptic number.

It is an amenable number.

1244210197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1244210197 is an equidigital number, since it uses as much as digits as its factorization.

1244210197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 1244210197 is about 35273.3638458256. The cubic root of 1244210197 is about 1075.5516035544.

The spelling of 1244210197 in words is "one billion, two hundred forty-four million, two hundred ten thousand, one hundred ninety-seven".