1338847619 has 2 divisors, whose sum is σ = 1338847620. Its totient is φ = 1338847618.

The previous prime is 1338847571. The next prime is 1338847621. The reversal of 1338847619 is 9167488331.

It is a strong prime.

It is an emirp because it is prime and its reverse (9167488331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1338847619 - 2¹⁶ = 1338782083 is a prime.

It is a super-2 number, since 2×1338847619² = 3585025893803938322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 1338847621, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1338847919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 669423809 + 669423810.

It is an arithmetic number, because the mean of its divisors is an integer number (669423810).

Almost surely, 2^1338847619 is an apocalyptic number.

1338847619 is a deficient number, since it is larger than the sum of its proper divisors (1).

1338847619 is an equidigital number, since it uses as much as digits as its factorization.

1338847619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 50.

The square root of 1338847619 is about 36590.2667249092. The cubic root of 1338847619 is about 1102.1576435401.

The spelling of 1338847619 in words is "one billion, three hundred thirty-eight million, eight hundred forty-seven thousand, six hundred nineteen".