1340426513 has 2 divisors, whose sum is σ = 1340426514. Its totient is φ = 1340426512.

The previous prime is 1340426501. The next prime is 1340426543. The reversal of 1340426513 is 3156240431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 847275664 + 493150849 = 29108^2 + 22207^2 .

It is a cyclic number.

It is not a de Polignac number, because 1340426513 - 2⁸ = 1340426257 is a prime.

It is not a weakly prime, because it can be changed into another prime (1340426543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670213256 + 670213257.

It is an arithmetic number, because the mean of its divisors is an integer number (670213257).

Almost surely, 2^1340426513 is an apocalyptic number.

It is an amenable number.

1340426513 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340426513 is an equidigital number, since it uses as much as digits as its factorization.

1340426513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 1340426513 is about 36611.8356955780. The cubic root of 1340426513 is about 1102.5907290406.

Adding to 1340426513 its reverse (3156240431), we get a palindrome (4496666944).

The spelling of 1340426513 in words is "one billion, three hundred forty million, four hundred twenty-six thousand, five hundred thirteen".