1388738033 has 2 divisors, whose sum is σ = 1388738034. Its totient is φ = 1388738032.

The previous prime is 1388738023. The next prime is 1388738059. The reversal of 1388738033 is 3308378831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 834747664 + 553990369 = 28892^2 + 23537^2 .

It is an emirp because it is prime and its reverse (3308378831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1388738033 - 2¹² = 1388733937 is a prime.

It is not a weakly prime, because it can be changed into another prime (1388738003) 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, 694369016 + 694369017.

It is an arithmetic number, because the mean of its divisors is an integer number (694369017).

Almost surely, 2^1388738033 is an apocalyptic number.

It is an amenable number.

1388738033 is a deficient number, since it is larger than the sum of its proper divisors (1).

1388738033 is an equidigital number, since it uses as much as digits as its factorization.

1388738033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 1388738033 is about 37265.7756259010. The cubic root of 1388738033 is about 1115.6811868466.

The spelling of 1388738033 in words is "one billion, three hundred eighty-eight million, seven hundred thirty-eight thousand, thirty-three".