1343795891 has 2 divisors, whose sum is σ = 1343795892. Its totient is φ = 1343795890.

The previous prime is 1343795879. The next prime is 1343795909. The reversal of 1343795891 is 1985973431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1343795891 - 2¹⁰ = 1343794867 is a prime.

It is not a weakly prime, because it can be changed into another prime (1343795801) 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, 671897945 + 671897946.

It is an arithmetic number, because the mean of its divisors is an integer number (671897946).

Almost surely, 2^1343795891 is an apocalyptic number.

1343795891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1343795891 is an equidigital number, since it uses as much as digits as its factorization.

1343795891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 816480, while the sum is 50.

The square root of 1343795891 is about 36657.8216892384. The cubic root of 1343795891 is about 1103.5138025203.

The spelling of 1343795891 in words is "one billion, three hundred forty-three million, seven hundred ninety-five thousand, eight hundred ninety-one".