1345255643 has 4 divisors (see below), whose sum is σ = 1345341000. Its totient is φ = 1345170288.

The previous prime is 1345255627. The next prime is 1345255729. The reversal of 1345255643 is 3465525431.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1345255643 - 2⁴ = 1345255627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1345255597 and 1345255606.

It is not an unprimeable number, because it can be changed into a prime (1345255603) 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 3 ways as a sum of consecutive naturals, for example, 11393 + ... + 53106.

It is an arithmetic number, because the mean of its divisors is an integer number (336335250).

Almost surely, 2^1345255643 is an apocalyptic number.

1345255643 is a deficient number, since it is larger than the sum of its proper divisors (85357).

1345255643 is an equidigital number, since it uses as much as digits as its factorization.

1345255643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85356.

The product of its digits is 216000, while the sum is 38.

The square root of 1345255643 is about 36677.7267970631. The cubic root of 1345255643 is about 1103.9132365805.

The spelling of 1345255643 in words is "one billion, three hundred forty-five million, two hundred fifty-five thousand, six hundred forty-three".