1344196991 has 2 divisors, whose sum is σ = 1344196992. Its totient is φ = 1344196990.

The previous prime is 1344196969. The next prime is 1344196999. The reversal of 1344196991 is 1996914431.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1344196991 - 2²² = 1340002687 is a prime.

It is a super-2 number, since 2×1344196991² = 3613731101226908162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1344196999) 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, 672098495 + 672098496.

It is an arithmetic number, because the mean of its divisors is an integer number (672098496).

Almost surely, 2^1344196991 is an apocalyptic number.

1344196991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1344196991 is an equidigital number, since it uses as much as digits as its factorization.

1344196991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952, while the sum is 47.

The square root of 1344196991 is about 36663.2921462326. The cubic root of 1344196991 is about 1103.6235849058.

The spelling of 1344196991 in words is "one billion, three hundred forty-four million, one hundred ninety-six thousand, nine hundred ninety-one".