138063911 has 2 divisors, whose sum is σ = 138063912. Its totient is φ = 138063910.

The previous prime is 138063881. The next prime is 138063941. The reversal of 138063911 is 119360831.

It is a balanced prime because it is at equal distance from previous prime (138063881) and next prime (138063941).

It is a cyclic number.

It is not a de Polignac number, because 138063911 - 2¹⁴ = 138047527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138063941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69031955 + 69031956.

It is an arithmetic number, because the mean of its divisors is an integer number (69031956).

Almost surely, 2^138063911 is an apocalyptic number.

138063911 is a deficient number, since it is larger than the sum of its proper divisors (1).

138063911 is an equidigital number, since it uses as much as digits as its factorization.

138063911 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 138063911 is about 11750.0600423998. The cubic root of 138063911 is about 516.8446881975.

The spelling of 138063911 in words is "one hundred thirty-eight million, sixty-three thousand, nine hundred eleven".