1356343613 has 2 divisors, whose sum is σ = 1356343614. Its totient is φ = 1356343612.

The previous prime is 1356343609. The next prime is 1356343687. The reversal of 1356343613 is 3163436531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 755260324 + 601083289 = 27482^2 + 24517^2 .

It is a cyclic number.

It is not a de Polignac number, because 1356343613 - 2² = 1356343609 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1356343013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 678171806 + 678171807.

It is an arithmetic number, because the mean of its divisors is an integer number (678171807).

Almost surely, 2^1356343613 is an apocalyptic number.

It is an amenable number.

1356343613 is a deficient number, since it is larger than the sum of its proper divisors (1).

1356343613 is an equidigital number, since it uses as much as digits as its factorization.

1356343613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 35.

The square root of 1356343613 is about 36828.5706076139. The cubic root of 1356343613 is about 1106.9378614633.

The spelling of 1356343613 in words is "one billion, three hundred fifty-six million, three hundred forty-three thousand, six hundred thirteen".