1345565745 has 12 divisors (see below), whose sum is σ = 2332314036. Its totient is φ = 717635040.

The previous prime is 1345565729. The next prime is 1345565789. The reversal of 1345565745 is 5475655431.

1345565745 is a `hidden beast` number, since 1 + 3 + 4 + 556 + 57 + 45 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 187388721 + 1158177024 = 13689^2 + 34032^2 .

It is not a de Polignac number, because 1345565745 - 2⁴ = 1345565729 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 29901461 = 1345565745 / (1 + 3 + 4 + 5 + 5 + 6 + 5 + 7 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 1345565745.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 14950686 + ... + 14950775.

It is an arithmetic number, because the mean of its divisors is an integer number (194359503).

Almost surely, 2^1345565745 is an apocalyptic number.

1345565745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1345565745 is a deficient number, since it is larger than the sum of its proper divisors (986748291).

1345565745 is a wasteful number, since it uses less digits than its factorization.

1345565745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29901472 (or 29901469 counting only the distinct ones).

The product of its digits is 1260000, while the sum is 45.

The square root of 1345565745 is about 36681.9539419590. The cubic root of 1345565745 is about 1103.9980530251.

The spelling of 1345565745 in words is "one billion, three hundred forty-five million, five hundred sixty-five thousand, seven hundred forty-five".