1345191347 has 4 divisors (see below), whose sum is σ = 1364137776. Its totient is φ = 1326244920.

The previous prime is 1345191329. The next prime is 1345191389. The reversal of 1345191347 is 7431915431.

It is a happy number.

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 1345191347 - 2¹⁰ = 1345190323 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1345191347.

It is not an unprimeable number, because it can be changed into a prime (1345191047) 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, 9473108 + ... + 9473249.

It is an arithmetic number, because the mean of its divisors is an integer number (341034444).

Almost surely, 2^1345191347 is an apocalyptic number.

1345191347 is a deficient number, since it is larger than the sum of its proper divisors (18946429).

1345191347 is an equidigital number, since it uses as much as digits as its factorization.

1345191347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18946428.

The product of its digits is 45360, while the sum is 38.

The square root of 1345191347 is about 36676.8502873407. The cubic root of 1345191347 is about 1103.8956492576.

The spelling of 1345191347 in words is "one billion, three hundred forty-five million, one hundred ninety-one thousand, three hundred forty-seven".