1343795909 has 2 divisors, whose sum is σ = 1343795910. Its totient is φ = 1343795908.

The previous prime is 1343795891. The next prime is 1343795963. The reversal of 1343795909 is 9095973431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1332031009 + 11764900 = 36497^2 + 3430^2 .

It is an emirp because it is prime and its reverse (9095973431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1343795909 - 2¹⁶ = 1343730373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1343791909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 671897954 + 671897955.

It is an arithmetic number, because the mean of its divisors is an integer number (671897955).

Almost surely, 2^1343795909 is an apocalyptic number.

It is an amenable number.

1343795909 is a deficient number, since it is larger than the sum of its proper divisors (1).

1343795909 is an equidigital number, since it uses as much as digits as its factorization.

1343795909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 918540, while the sum is 50.

The square root of 1343795909 is about 36657.8219347522. The cubic root of 1343795909 is about 1103.5138074475.

The spelling of 1343795909 in words is "one billion, three hundred forty-three million, seven hundred ninety-five thousand, nine hundred nine".