1340565459 has 8 divisors (see below), whose sum is σ = 1797296592. Its totient is φ = 888772320.

The previous prime is 1340565433. The next prime is 1340565469. The reversal of 1340565459 is 9545650431.

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

It is not a de Polignac number, because 1340565459 - 2⁵ = 1340565427 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1340565459.

It is not an unprimeable number, because it can be changed into a prime (1340565469) 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, 1233864 + ... + 1234949.

It is an arithmetic number, because the mean of its divisors is an integer number (224662074).

Almost surely, 2^1340565459 is an apocalyptic number.

1340565459 is a deficient number, since it is larger than the sum of its proper divisors (456731133).

1340565459 is a wasteful number, since it uses less digits than its factorization.

1340565459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2468997.

The product of its (nonzero) digits is 324000, while the sum is 42.

The square root of 1340565459 is about 36613.7332021743. The cubic root of 1340565459 is about 1102.6288251930.

The spelling of 1340565459 in words is "one billion, three hundred forty million, five hundred sixty-five thousand, four hundred fifty-nine".