1298191 has 2 divisors, whose sum is σ = 1298192. Its totient is φ = 1298190.

The previous prime is 1298173. The next prime is 1298197. The reversal of 1298191 is 1918921.

It is a strong prime.

It is an emirp because it is prime and its reverse (1918921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1298191 - 2¹¹ = 1296143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1298197) 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, 649095 + 649096.

It is an arithmetic number, because the mean of its divisors is an integer number (649096).

2^1298191 is an apocalyptic number.

1298191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1298191 is an equidigital number, since it uses as much as digits as its factorization.

1298191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 31.

The square root of 1298191 is about 1139.3818499520. The cubic root of 1298191 is about 109.0886409672.

The spelling of 1298191 in words is "one million, two hundred ninety-eight thousand, one hundred ninety-one".