1338347893 has 2 divisors, whose sum is σ = 1338347894. Its totient is φ = 1338347892.

The previous prime is 1338347861. The next prime is 1338347911. The reversal of 1338347893 is 3987438331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1309209489 + 29138404 = 36183^2 + 5398^2 .

It is an emirp because it is prime and its reverse (3987438331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1338347893 - 2⁵ = 1338347861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1338347833) 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, 669173946 + 669173947.

It is an arithmetic number, because the mean of its divisors is an integer number (669173947).

Almost surely, 2^1338347893 is an apocalyptic number.

It is an amenable number.

1338347893 is a deficient number, since it is larger than the sum of its proper divisors (1).

1338347893 is an equidigital number, since it uses as much as digits as its factorization.

1338347893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 49.

The square root of 1338347893 is about 36583.4374136712. The cubic root of 1338347893 is about 1102.0204993865.

The spelling of 1338347893 in words is "one billion, three hundred thirty-eight million, three hundred forty-seven thousand, eight hundred ninety-three".