1345385843 has 4 divisors (see below), whose sum is σ = 1345567128. Its totient is φ = 1345204560.

The previous prime is 1345385837. The next prime is 1345385903. The reversal of 1345385843 is 3485835431.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1345385843 - 2¹⁰ = 1345384819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1345385794 and 1345385803.

It is not an unprimeable number, because it can be changed into a prime (1345385543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79013 + ... + 94518.

It is an arithmetic number, because the mean of its divisors is an integer number (336391782).

Almost surely, 2^1345385843 is an apocalyptic number.

1345385843 is a deficient number, since it is larger than the sum of its proper divisors (181285).

1345385843 is an equidigital number, since it uses as much as digits as its factorization.

1345385843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181284.

The product of its digits is 691200, while the sum is 44.

The square root of 1345385843 is about 36679.5016732780. The cubic root of 1345385843 is about 1103.9488493573.

The spelling of 1345385843 in words is "one billion, three hundred forty-five million, three hundred eighty-five thousand, eight hundred forty-three".