1356489539 has 2 divisors, whose sum is σ = 1356489540. Its totient is φ = 1356489538.

The previous prime is 1356489527. The next prime is 1356489557. The reversal of 1356489539 is 9359846531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1356489539 - 2⁸ = 1356489283 is a prime.

It is not a weakly prime, because it can be changed into another prime (1356489509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 678244769 + 678244770.

It is an arithmetic number, because the mean of its divisors is an integer number (678244770).

Almost surely, 2^1356489539 is an apocalyptic number.

1356489539 is a deficient number, since it is larger than the sum of its proper divisors (1).

1356489539 is an equidigital number, since it uses as much as digits as its factorization.

1356489539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3499200, while the sum is 53.

The square root of 1356489539 is about 36830.5517064298. The cubic root of 1356489539 is about 1106.9775577026.

The spelling of 1356489539 in words is "one billion, three hundred fifty-six million, four hundred eighty-nine thousand, five hundred thirty-nine".