1366036489 has 2 divisors, whose sum is σ = 1366036490. Its totient is φ = 1366036488.

The previous prime is 1366036459. The next prime is 1366036541. The reversal of 1366036489 is 9846306631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 827425225 + 538611264 = 28765^2 + 23208^2 .

It is a cyclic number.

It is not a de Polignac number, because 1366036489 - 2⁵ = 1366036457 is a prime.

It is not a weakly prime, because it can be changed into another prime (1366036409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 683018244 + 683018245.

It is an arithmetic number, because the mean of its divisors is an integer number (683018245).

Almost surely, 2^1366036489 is an apocalyptic number.

It is an amenable number.

1366036489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1366036489 is an equidigital number, since it uses as much as digits as its factorization.

1366036489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 46.

The square root of 1366036489 is about 36959.9308576193. The cubic root of 1366036489 is about 1109.5684519444.

The spelling of 1366036489 in words is "one billion, three hundred sixty-six million, thirty-six thousand, four hundred eighty-nine".