138330641 has 2 divisors, whose sum is σ = 138330642. Its totient is φ = 138330640.

The previous prime is 138330617. The next prime is 138330677. The reversal of 138330641 is 146033831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72250000 + 66080641 = 8500^2 + 8129^2 .

It is a cyclic number.

It is not a de Polignac number, because 138330641 - 2¹⁴ = 138314257 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (138330611) 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, 69165320 + 69165321.

It is an arithmetic number, because the mean of its divisors is an integer number (69165321).

Almost surely, 2^138330641 is an apocalyptic number.

It is an amenable number.

138330641 is a deficient number, since it is larger than the sum of its proper divisors (1).

138330641 is an equidigital number, since it uses as much as digits as its factorization.

138330641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 138330641 is about 11761.4047205255. The cubic root of 138330641 is about 517.1773102430.

The spelling of 138330641 in words is "one hundred thirty-eight million, three hundred thirty thousand, six hundred forty-one".