1356713549 has 2 divisors, whose sum is σ = 1356713550. Its totient is φ = 1356713548.

The previous prime is 1356713513. The next prime is 1356713551. The reversal of 1356713549 is 9453176531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1273776100 + 82937449 = 35690^2 + 9107^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1356713549 is a prime.

Together with 1356713551, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1356713599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 678356774 + 678356775.

It is an arithmetic number, because the mean of its divisors is an integer number (678356775).

Almost surely, 2^1356713549 is an apocalyptic number.

It is an amenable number.

1356713549 is a deficient number, since it is larger than the sum of its proper divisors (1).

1356713549 is an equidigital number, since it uses as much as digits as its factorization.

1356713549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 340200, while the sum is 44.

The square root of 1356713549 is about 36833.5926702786. The cubic root of 1356713549 is about 1107.0384895876.

The spelling of 1356713549 in words is "one billion, three hundred fifty-six million, seven hundred thirteen thousand, five hundred forty-nine".