1389016663 has 2 divisors, whose sum is σ = 1389016664. Its totient is φ = 1389016662.

The previous prime is 1389016661. The next prime is 1389016691. The reversal of 1389016663 is 3666109831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1389016663 - 2¹ = 1389016661 is a prime.

Together with 1389016661, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1389016661) 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, 694508331 + 694508332.

It is an arithmetic number, because the mean of its divisors is an integer number (694508332).

Almost surely, 2^1389016663 is an apocalyptic number.

1389016663 is a deficient number, since it is larger than the sum of its proper divisors (1).

1389016663 is an equidigital number, since it uses as much as digits as its factorization.

1389016663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 1389016663 is about 37269.5138551605. The cubic root of 1389016663 is about 1115.7557969012.

The spelling of 1389016663 in words is "one billion, three hundred eighty-nine million, sixteen thousand, six hundred sixty-three".