1340597659 has 2 divisors, whose sum is σ = 1340597660. Its totient is φ = 1340597658.

The previous prime is 1340597651. The next prime is 1340597701. The reversal of 1340597659 is 9567950431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1340597659 - 2³ = 1340597651 is a prime.

It is not a weakly prime, because it can be changed into another prime (1340597651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670298829 + 670298830.

It is an arithmetic number, because the mean of its divisors is an integer number (670298830).

Almost surely, 2^1340597659 is an apocalyptic number.

1340597659 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340597659 is an equidigital number, since it uses as much as digits as its factorization.

1340597659 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1020600, while the sum is 49.

The square root of 1340597659 is about 36614.1729252485. The cubic root of 1340597659 is about 1102.6376533990.

The spelling of 1340597659 in words is "one billion, three hundred forty million, five hundred ninety-seven thousand, six hundred fifty-nine".