138076307 has 2 divisors, whose sum is σ = 138076308. Its totient is φ = 138076306.

The previous prime is 138076283. The next prime is 138076321. The reversal of 138076307 is 703670831.

It is a strong prime.

It is an emirp because it is prime and its reverse (703670831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 138076307 - 2⁶ = 138076243 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (138076207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69038153 + 69038154.

It is an arithmetic number, because the mean of its divisors is an integer number (69038154).

Almost surely, 2^138076307 is an apocalyptic number.

138076307 is a deficient number, since it is larger than the sum of its proper divisors (1).

138076307 is an equidigital number, since it uses as much as digits as its factorization.

It is an anagram of its base 9 representation: 138076307 = (317730068)₉.

138076307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 138076307 is about 11750.5875172265. The cubic root of 138076307 is about 516.8601559496.

The spelling of 138076307 in words is "one hundred thirty-eight million, seventy-six thousand, three hundred seven".