1340506613 has 2 divisors, whose sum is σ = 1340506614. Its totient is φ = 1340506612.

The previous prime is 1340506579. The next prime is 1340506667. The reversal of 1340506613 is 3166050431.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 868009444 + 472497169 = 29462^2 + 21737^2 .

It is a cyclic number.

It is not a de Polignac number, because 1340506613 - 2¹⁰ = 1340505589 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1340506213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670253306 + 670253307.

It is an arithmetic number, because the mean of its divisors is an integer number (670253307).

Almost surely, 2^1340506613 is an apocalyptic number.

It is an amenable number.

1340506613 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340506613 is an equidigital number, since it uses as much as digits as its factorization.

1340506613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 1340506613 is about 36612.9295877836. The cubic root of 1340506613 is about 1102.6126911443.

The spelling of 1340506613 in words is "one billion, three hundred forty million, five hundred six thousand, six hundred thirteen".