1338242579 has 2 divisors, whose sum is σ = 1338242580. Its totient is φ = 1338242578.

The previous prime is 1338242573. The next prime is 1338242593. The reversal of 1338242579 is 9752428331.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (9752428331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1338242579 - 2²⁰ = 1337194003 is a prime.

It is not a weakly prime, because it can be changed into another prime (1338242573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 669121289 + 669121290.

It is an arithmetic number, because the mean of its divisors is an integer number (669121290).

Almost surely, 2^1338242579 is an apocalyptic number.

1338242579 is a deficient number, since it is larger than the sum of its proper divisors (1).

1338242579 is an equidigital number, since it uses as much as digits as its factorization.

1338242579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 44.

The square root of 1338242579 is about 36581.9980181509. The cubic root of 1338242579 is about 1101.9915927940.

The spelling of 1338242579 in words is "one billion, three hundred thirty-eight million, two hundred forty-two thousand, five hundred seventy-nine".