1338038887 has 2 divisors, whose sum is σ = 1338038888. Its totient is φ = 1338038886.

The previous prime is 1338038803. The next prime is 1338038909. The reversal of 1338038887 is 7888308331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1338038887 - 2⁷ = 1338038759 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1338038887.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1338038587) 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, 669019443 + 669019444.

It is an arithmetic number, because the mean of its divisors is an integer number (669019444).

Almost surely, 2^1338038887 is an apocalyptic number.

1338038887 is a deficient number, since it is larger than the sum of its proper divisors (1).

1338038887 is an equidigital number, since it uses as much as digits as its factorization.

1338038887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 774144, while the sum is 49.

The square root of 1338038887 is about 36579.2138652541. The cubic root of 1338038887 is about 1101.9356790993.

The spelling of 1338038887 in words is "one billion, three hundred thirty-eight million, thirty-eight thousand, eight hundred eighty-seven".