1366459387 has 2 divisors, whose sum is σ = 1366459388. Its totient is φ = 1366459386.

The previous prime is 1366459379. The next prime is 1366459399. The reversal of 1366459387 is 7839546631.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1366459387 - 2³ = 1366459379 is a prime.

It is a super-2 number, since 2×1366459387² = 3734422512640831538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1366450387) 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, 683229693 + 683229694.

It is an arithmetic number, because the mean of its divisors is an integer number (683229694).

Almost surely, 2^1366459387 is an apocalyptic number.

1366459387 is a deficient number, since it is larger than the sum of its proper divisors (1).

1366459387 is an equidigital number, since it uses as much as digits as its factorization.

1366459387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3265920, while the sum is 52.

The square root of 1366459387 is about 36965.6514483378. The cubic root of 1366459387 is about 1109.6829403126.

The spelling of 1366459387 in words is "one billion, three hundred sixty-six million, four hundred fifty-nine thousand, three hundred eighty-seven".