138308147 has 2 divisors, whose sum is σ = 138308148. Its totient is φ = 138308146.

The previous prime is 138308117. The next prime is 138308153. The reversal of 138308147 is 741803831.

138308147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (741803831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 138308147 - 2¹⁰ = 138307123 is a prime.

It is not a weakly prime, because it can be changed into another prime (138308117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69154073 + 69154074.

It is an arithmetic number, because the mean of its divisors is an integer number (69154074).

Almost surely, 2^138308147 is an apocalyptic number.

138308147 is a deficient number, since it is larger than the sum of its proper divisors (1).

138308147 is an equidigital number, since it uses as much as digits as its factorization.

138308147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 138308147 is about 11760.4484183215. The cubic root of 138308147 is about 517.1492759214.

The spelling of 138308147 in words is "one hundred thirty-eight million, three hundred eight thousand, one hundred forty-seven".