138667033 has 2 divisors, whose sum is σ = 138667034. Its totient is φ = 138667032.

The previous prime is 138666989. The next prime is 138667093. The reversal of 138667033 is 330766831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138603529 + 63504 = 11773^2 + 252^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138667033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138666983 and 138667001.

It is not a weakly prime, because it can be changed into another prime (138667093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69333516 + 69333517.

It is an arithmetic number, because the mean of its divisors is an integer number (69333517).

Almost surely, 2^138667033 is an apocalyptic number.

It is an amenable number.

138667033 is a deficient number, since it is larger than the sum of its proper divisors (1).

138667033 is an equidigital number, since it uses as much as digits as its factorization.

138667033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 138667033 is about 11775.6967097493. The cubic root of 138667033 is about 517.5961942428.

The spelling of 138667033 in words is "one hundred thirty-eight million, six hundred sixty-seven thousand, thirty-three".