1340560209 has 16 divisors (see below), whose sum is σ = 1840890240. Its totient is φ = 867104640.

The previous prime is 1340560189. The next prime is 1340560223. The reversal of 1340560209 is 9020650431.

It is not a de Polignac number, because 1340560209 - 2⁹ = 1340559697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1340560229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23029 + ... + 56669.

It is an arithmetic number, because the mean of its divisors is an integer number (115055640).

Almost surely, 2^1340560209 is an apocalyptic number.

It is an amenable number.

1340560209 is a deficient number, since it is larger than the sum of its proper divisors (500330031).

1340560209 is a wasteful number, since it uses less digits than its factorization.

1340560209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34040.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 1340560209 is about 36613.6615076941. The cubic root of 1340560209 is about 1102.6273857982.

The spelling of 1340560209 in words is "one billion, three hundred forty million, five hundred sixty thousand, two hundred nine".