1340707547 has 2 divisors, whose sum is σ = 1340707548. Its totient is φ = 1340707546.

The previous prime is 1340707531. The next prime is 1340707553. The reversal of 1340707547 is 7457070431.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1340707547 - 2⁴ = 1340707531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1340707547.

It is not a weakly prime, because it can be changed into another prime (1340107547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670353773 + 670353774.

It is an arithmetic number, because the mean of its divisors is an integer number (670353774).

Almost surely, 2^1340707547 is an apocalyptic number.

1340707547 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340707547 is an equidigital number, since it uses as much as digits as its factorization.

1340707547 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82320, while the sum is 38.

The square root of 1340707547 is about 36615.6735155862. The cubic root of 1340707547 is about 1102.6677800954.

Adding to 1340707547 its reverse (7457070431), we get a palindrome (8797777978).

The spelling of 1340707547 in words is "one billion, three hundred forty million, seven hundred seven thousand, five hundred forty-seven".