1345312549 has 24 divisors (see below), whose sum is σ = 1597506624. Its totient is φ = 1109750400.

The previous prime is 1345312469. The next prime is 1345312643. The reversal of 1345312549 is 9452135431.

It is not a de Polignac number, because 1345312549 - 2⁹ = 1345312037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345313549) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1526589 + ... + 1527469.

It is an arithmetic number, because the mean of its divisors is an integer number (66562776).

Almost surely, 2^1345312549 is an apocalyptic number.

It is an amenable number.

1345312549 is a deficient number, since it is larger than the sum of its proper divisors (252194075).

1345312549 is an equidigital number, since it uses as much as digits as its factorization.

1345312549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177 (or 1146 counting only the distinct ones).

The product of its digits is 64800, while the sum is 37.

The square root of 1345312549 is about 36678.5025457692. The cubic root of 1345312549 is about 1103.9288019989.

The spelling of 1345312549 in words is "one billion, three hundred forty-five million, three hundred twelve thousand, five hundred forty-nine".