1345445443 has 2 divisors, whose sum is σ = 1345445444. Its totient is φ = 1345445442.

The previous prime is 1345445429. The next prime is 1345445503. The reversal of 1345445443 is 3445445431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1345445443 - 2¹⁷ = 1345314371 is a prime.

It is not a weakly prime, because it can be changed into another prime (1345425443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672722721 + 672722722.

It is an arithmetic number, because the mean of its divisors is an integer number (672722722).

Almost surely, 2^1345445443 is an apocalyptic number.

1345445443 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345445443 is an equidigital number, since it uses as much as digits as its factorization.

1345445443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 230400, while the sum is 37.

The square root of 1345445443 is about 36680.3141071611. The cubic root of 1345445443 is about 1103.9651505991.

The spelling of 1345445443 in words is "one billion, three hundred forty-five million, four hundred forty-five thousand, four hundred forty-three".