1338567449 has 2 divisors, whose sum is σ = 1338567450. Its totient is φ = 1338567448.

The previous prime is 1338567371. The next prime is 1338567479. The reversal of 1338567449 is 9447658331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 924160000 + 414407449 = 30400^2 + 20357^2 .

It is a cyclic number.

It is not a de Polignac number, because 1338567449 - 2⁸ = 1338567193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1338567397 and 1338567406.

It is not a weakly prime, because it can be changed into another prime (1338567479) 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, 669283724 + 669283725.

It is an arithmetic number, because the mean of its divisors is an integer number (669283725).

Almost surely, 2^1338567449 is an apocalyptic number.

It is an amenable number.

1338567449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1338567449 is an equidigital number, since it uses as much as digits as its factorization.

1338567449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2177280, while the sum is 50.

The square root of 1338567449 is about 36586.4380474514. The cubic root of 1338567449 is about 1102.0807582535.

The spelling of 1338567449 in words is "one billion, three hundred thirty-eight million, five hundred sixty-seven thousand, four hundred forty-nine".