1345130161 has 2 divisors, whose sum is σ = 1345130162. Its totient is φ = 1345130160.

The previous prime is 1345130159. The next prime is 1345130179. The reversal of 1345130161 is 1610315431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1070598400 + 274531761 = 32720^2 + 16569^2 .

It is a cyclic number.

It is not a de Polignac number, because 1345130161 - 2¹ = 1345130159 is a prime.

Together with 1345130159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1345130141) 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, 672565080 + 672565081.

It is an arithmetic number, because the mean of its divisors is an integer number (672565081).

Almost surely, 2^1345130161 is an apocalyptic number.

It is an amenable number.

1345130161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345130161 is an equidigital number, since it uses as much as digits as its factorization.

1345130161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 1345130161 is about 36676.0161549752. The cubic root of 1345130161 is about 1103.8789121137.

Adding to 1345130161 its reverse (1610315431), we get a palindrome (2955445592).

The spelling of 1345130161 in words is "one billion, three hundred forty-five million, one hundred thirty thousand, one hundred sixty-one".