1344790691 has 2 divisors, whose sum is σ = 1344790692. Its totient is φ = 1344790690.

The previous prime is 1344790687. The next prime is 1344790823. The reversal of 1344790691 is 1960974431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1344790691 - 2² = 1344790687 is a prime.

It is not a weakly prime, because it can be changed into another prime (1344790891) 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, 672395345 + 672395346.

It is an arithmetic number, because the mean of its divisors is an integer number (672395346).

Almost surely, 2^1344790691 is an apocalyptic number.

1344790691 is a deficient number, since it is larger than the sum of its proper divisors (1).

1344790691 is an equidigital number, since it uses as much as digits as its factorization.

1344790691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 1344790691 is about 36671.3879066501. The cubic root of 1344790691 is about 1103.7860424635.

The spelling of 1344790691 in words is "one billion, three hundred forty-four million, seven hundred ninety thousand, six hundred ninety-one".