1938239033 has 2 divisors, whose sum is σ = 1938239034. Its totient is φ = 1938239032.

The previous prime is 1938239021. The next prime is 1938239057. The reversal of 1938239033 is 3309328391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1791659584 + 146579449 = 42328^2 + 12107^2 .

It is an emirp because it is prime and its reverse (3309328391) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1938239033 - 2¹² = 1938234937 is a prime.

It is not a weakly prime, because it can be changed into another prime (1938239833) 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, 969119516 + 969119517.

It is an arithmetic number, because the mean of its divisors is an integer number (969119517).

Almost surely, 2^1938239033 is an apocalyptic number.

It is an amenable number.

1938239033 is a deficient number, since it is larger than the sum of its proper divisors (1).

1938239033 is an equidigital number, since it uses as much as digits as its factorization.

1938239033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104976, while the sum is 41.

The square root of 1938239033 is about 44025.4362045398. The cubic root of 1938239033 is about 1246.8162247850.

The spelling of 1938239033 in words is "one billion, nine hundred thirty-eight million, two hundred thirty-nine thousand, thirty-three".