1338193605 has 16 divisors (see below), whose sum is σ = 2446982784. Its totient is φ = 611745600.

The previous prime is 1338193601. The next prime is 1338193631. The reversal of 1338193605 is 5063918331.

It is not a de Polignac number, because 1338193605 - 2² = 1338193601 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1338193601) 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 in 15 ways as a sum of consecutive naturals, for example, 6372246 + ... + 6372455.

It is an arithmetic number, because the mean of its divisors is an integer number (152936424).

Almost surely, 2^1338193605 is an apocalyptic number.

1338193605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1338193605 is a deficient number, since it is larger than the sum of its proper divisors (1108789179).

1338193605 is a wasteful number, since it uses less digits than its factorization.

1338193605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12744716.

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 1338193605 is about 36581.3286390749. The cubic root of 1338193605 is about 1101.9781498913.

The spelling of 1338193605 in words is "one billion, three hundred thirty-eight million, one hundred ninety-three thousand, six hundred five".