1345412273 has 2 divisors, whose sum is σ = 1345412274. Its totient is φ = 1345412272.

The previous prime is 1345412227. The next prime is 1345412309. The reversal of 1345412273 is 3722145431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1234257424 + 111154849 = 35132^2 + 10543^2 .

It is a cyclic number.

It is not a de Polignac number, because 1345412273 - 2²⁰ = 1344363697 is a prime.

It is not a weakly prime, because it can be changed into another prime (1345412203) 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, 672706136 + 672706137.

It is an arithmetic number, because the mean of its divisors is an integer number (672706137).

Almost surely, 2^1345412273 is an apocalyptic number.

It is an amenable number.

1345412273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345412273 is an equidigital number, since it uses as much as digits as its factorization.

1345412273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 32.

The square root of 1345412273 is about 36679.8619544840. The cubic root of 1345412273 is about 1103.9560783063.

The spelling of 1345412273 in words is "one billion, three hundred forty-five million, four hundred twelve thousand, two hundred seventy-three".