1345355603 has 4 divisors (see below), whose sum is σ = 1345429248. Its totient is φ = 1345281960.

The previous prime is 1345355593. The next prime is 1345355611. The reversal of 1345355603 is 3065535431.

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 1345355603 - 2¹⁰ = 1345354579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1345355633) 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, 13550 + ... + 53612.

It is an arithmetic number, because the mean of its divisors is an integer number (336357312).

Almost surely, 2^1345355603 is an apocalyptic number.

1345355603 is a deficient number, since it is larger than the sum of its proper divisors (73645).

1345355603 is an equidigital number, since it uses as much as digits as its factorization.

1345355603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73644.

The product of its (nonzero) digits is 81000, while the sum is 35.

The square root of 1345355603 is about 36679.0894516208. The cubic root of 1345355603 is about 1103.9405782075.

The spelling of 1345355603 in words is "one billion, three hundred forty-five million, three hundred fifty-five thousand, six hundred three".