138285011 has 2 divisors, whose sum is σ = 138285012. Its totient is φ = 138285010.

The previous prime is 138284999. The next prime is 138285013. The reversal of 138285011 is 110582831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 138285011 - 2¹⁸ = 138022867 is a prime.

Together with 138285013, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (138285013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69142505 + 69142506.

It is an arithmetic number, because the mean of its divisors is an integer number (69142506).

Almost surely, 2^138285011 is an apocalyptic number.

138285011 is a deficient number, since it is larger than the sum of its proper divisors (1).

138285011 is an equidigital number, since it uses as much as digits as its factorization.

138285011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 29.

The square root of 138285011 is about 11759.4647412202. The cubic root of 138285011 is about 517.1204383026.

The spelling of 138285011 in words is "one hundred thirty-eight million, two hundred eighty-five thousand, eleven".