1338686747 has 2 divisors, whose sum is σ = 1338686748. Its totient is φ = 1338686746.

The previous prime is 1338686717. The next prime is 1338686803. The reversal of 1338686747 is 7476868331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1338686747 - 2⁶ = 1338686683 is a prime.

It is not a weakly prime, because it can be changed into another prime (1338686717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 669343373 + 669343374.

It is an arithmetic number, because the mean of its divisors is an integer number (669343374).

Almost surely, 2^1338686747 is an apocalyptic number.

1338686747 is a deficient number, since it is larger than the sum of its proper divisors (1).

1338686747 is an equidigital number, since it uses as much as digits as its factorization.

1338686747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4064256, while the sum is 53.

The square root of 1338686747 is about 36588.0683693469. The cubic root of 1338686747 is about 1102.1134977628.

The spelling of 1338686747 in words is "one billion, three hundred thirty-eight million, six hundred eighty-six thousand, seven hundred forty-seven".