1345703509 has 8 divisors (see below), whose sum is σ = 1373695200. Its totient is φ = 1317944496.

The previous prime is 1345703503. The next prime is 1345703537. The reversal of 1345703509 is 9053075431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1345703509 - 2⁵ = 1345703477 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 (1345703503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46459 + ... + 69640.

It is an arithmetic number, because the mean of its divisors is an integer number (171711900).

Almost surely, 2^1345703509 is an apocalyptic number.

It is an amenable number.

1345703509 is a deficient number, since it is larger than the sum of its proper divisors (27991691).

1345703509 is a wasteful number, since it uses less digits than its factorization.

1345703509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116339.

The product of its (nonzero) digits is 56700, while the sum is 37.

The square root of 1345703509 is about 36683.8317109868. The cubic root of 1345703509 is about 1104.0357288746.

The spelling of 1345703509 in words is "one billion, three hundred forty-five million, seven hundred three thousand, five hundred nine".