1345538191 has 6 divisors (see below), whose sum is σ = 1362900560. Its totient is φ = 1328184156.

The previous prime is 1345538147. The next prime is 1345538237. The reversal of 1345538191 is 1918355431.

It is not a de Polignac number, because 1345538191 - 2⁷ = 1345538063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345538141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 323970 + ... + 328096.

Almost surely, 2^1345538191 is an apocalyptic number.

1345538191 is a deficient number, since it is larger than the sum of its proper divisors (17362369).

1345538191 is an frugal number, since it uses more digits than its factorization.

1345538191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8333 (or 4206 counting only the distinct ones).

The product of its digits is 64800, while the sum is 40.

The square root of 1345538191 is about 36681.5783602614. The cubic root of 1345538191 is about 1103.9905172184.

The spelling of 1345538191 in words is "one billion, three hundred forty-five million, five hundred thirty-eight thousand, one hundred ninety-one".