438033133 has 2 divisors, whose sum is σ = 438033134. Its totient is φ = 438033132.

The previous prime is 438033109. The next prime is 438033143. The reversal of 438033133 is 331330834.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 315311049 + 122722084 = 17757^2 + 11078^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-438033133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (438033143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219016566 + 219016567.

It is an arithmetic number, because the mean of its divisors is an integer number (219016567).

Almost surely, 2^438033133 is an apocalyptic number.

It is an amenable number.

438033133 is a deficient number, since it is larger than the sum of its proper divisors (1).

438033133 is an equidigital number, since it uses as much as digits as its factorization.

438033133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 438033133 is about 20929.2410994761. The cubic root of 438033133 is about 759.4554808050.

Adding to 438033133 its reverse (331330834), we get a palindrome (769363967).

The spelling of 438033133 in words is "four hundred thirty-eight million, thirty-three thousand, one hundred thirty-three".