1338661793 has 8 divisors (see below), whose sum is σ = 1530180288. Its totient is φ = 1147213584.

The previous prime is 1338661781. The next prime is 1338661861. The reversal of 1338661793 is 3971668331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1338661793 - 2⁶ = 1338661729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1338661693) 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 7 ways as a sum of consecutive naturals, for example, 32930 + ... + 61332.

It is an arithmetic number, because the mean of its divisors is an integer number (191272536).

Almost surely, 2^1338661793 is an apocalyptic number.

It is an amenable number.

1338661793 is a deficient number, since it is larger than the sum of its proper divisors (191518495).

1338661793 is an equidigital number, since it uses as much as digits as its factorization.

1338661793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35143.

The product of its digits is 489888, while the sum is 47.

The square root of 1338661793 is about 36587.7273549479. The cubic root of 1338661793 is about 1102.1066496805.

The spelling of 1338661793 in words is "one billion, three hundred thirty-eight million, six hundred sixty-one thousand, seven hundred ninety-three".