1345255019 has 2 divisors, whose sum is σ = 1345255020. Its totient is φ = 1345255018.

The previous prime is 1345255007. The next prime is 1345255049. The reversal of 1345255019 is 9105525431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1345255019 - 2⁸ = 1345254763 is a prime.

It is a super-2 number, since 2×1345255019² = 3619422132289380722, 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 1345255019.

It is not a weakly prime, because it can be changed into another prime (1345255049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672627509 + 672627510.

It is an arithmetic number, because the mean of its divisors is an integer number (672627510).

Almost surely, 2^1345255019 is an apocalyptic number.

1345255019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345255019 is an equidigital number, since it uses as much as digits as its factorization.

1345255019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 1345255019 is about 36677.7182905371. The cubic root of 1345255019 is about 1103.9130658962.

The spelling of 1345255019 in words is "one billion, three hundred forty-five million, two hundred fifty-five thousand, nineteen".