1345026671 has 2 divisors, whose sum is σ = 1345026672. Its totient is φ = 1345026670.

The previous prime is 1345026659. The next prime is 1345026721. The reversal of 1345026671 is 1766205431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1345026671 - 2¹⁸ = 1344764527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1345023671) 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, 672513335 + 672513336.

It is an arithmetic number, because the mean of its divisors is an integer number (672513336).

Almost surely, 2^1345026671 is an apocalyptic number.

1345026671 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345026671 is an equidigital number, since it uses as much as digits as its factorization.

1345026671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 1345026671 is about 36674.6052603160. The cubic root of 1345026671 is about 1103.8506017534.

The spelling of 1345026671 in words is "one billion, three hundred forty-five million, twenty-six thousand, six hundred seventy-one".