1345645543 has 24 divisors (see below), whose sum is σ = 1530602928. Its totient is φ = 1172928000.

The previous prime is 1345645519. The next prime is 1345645547. The reversal of 1345645543 is 3455465431.

It is a de Polignac number, because none of the positive numbers 2^k-1345645543 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1345645496 and 1345645505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345645547) 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 in 23 ways as a sum of consecutive naturals, for example, 1127355 + ... + 1128547.

It is an arithmetic number, because the mean of its divisors is an integer number (63775122).

Almost surely, 2^1345645543 is an apocalyptic number.

1345645543 is a deficient number, since it is larger than the sum of its proper divisors (184957385).

1345645543 is a wasteful number, since it uses less digits than its factorization.

1345645543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1347 (or 1306 counting only the distinct ones).

The product of its digits is 432000, while the sum is 40.

The square root of 1345645543 is about 36683.0416268880. The cubic root of 1345645543 is about 1104.0198765828.

The spelling of 1345645543 in words is "one billion, three hundred forty-five million, six hundred forty-five thousand, five hundred forty-three".