1338969547 has 2 divisors, whose sum is σ = 1338969548. Its totient is φ = 1338969546.

The previous prime is 1338969481. The next prime is 1338969553. The reversal of 1338969547 is 7459698331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1338969547 - 2¹⁹ = 1338445259 is a prime.

It is not a weakly prime, because it can be changed into another prime (1338966547) 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, 669484773 + 669484774.

It is an arithmetic number, because the mean of its divisors is an integer number (669484774).

Almost surely, 2^1338969547 is an apocalyptic number.

1338969547 is a deficient number, since it is larger than the sum of its proper divisors (1).

1338969547 is an equidigital number, since it uses as much as digits as its factorization.

1338969547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4898880, while the sum is 55.

The square root of 1338969547 is about 36591.9328131215. The cubic root of 1338969547 is about 1102.1911001227.

The spelling of 1338969547 in words is "one billion, three hundred thirty-eight million, nine hundred sixty-nine thousand, five hundred forty-seven".