1345852709 has 2 divisors, whose sum is σ = 1345852710. Its totient is φ = 1345852708.

The previous prime is 1345852681. The next prime is 1345852727. The reversal of 1345852709 is 9072585431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1087350625 + 258502084 = 32975^2 + 16078^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1345852709 is a prime.

It is a super-2 number, since 2×1345852709² = 3622639028645277362, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1345852709.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1345852789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672926354 + 672926355.

It is an arithmetic number, because the mean of its divisors is an integer number (672926355).

Almost surely, 2^1345852709 is an apocalyptic number.

It is an amenable number.

1345852709 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345852709 is an equidigital number, since it uses as much as digits as its factorization.

1345852709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 1345852709 is about 36685.8652480761. The cubic root of 1345852709 is about 1104.0765293536.

The spelling of 1345852709 in words is "one billion, three hundred forty-five million, eight hundred fifty-two thousand, seven hundred nine".