1043340509 has 2 divisors, whose sum is σ = 1043340510. Its totient is φ = 1043340508.

The previous prime is 1043340497. The next prime is 1043340577. The reversal of 1043340509 is 9050433401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1022592484 + 20748025 = 31978^2 + 4555^2 .

It is an emirp because it is prime and its reverse (9050433401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1043340509 - 2⁸ = 1043340253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1043340409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521670254 + 521670255.

It is an arithmetic number, because the mean of its divisors is an integer number (521670255).

Almost surely, 2^1043340509 is an apocalyptic number.

It is an amenable number.

1043340509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1043340509 is an equidigital number, since it uses as much as digits as its factorization.

1043340509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 1043340509 is about 32300.7818636020. The cubic root of 1043340509 is about 1014.2430098749.

The spelling of 1043340509 in words is "one billion, forty-three million, three hundred forty thousand, five hundred nine".