138068377 has 2 divisors, whose sum is σ = 138068378. Its totient is φ = 138068376.

The previous prime is 138068363. The next prime is 138068387. The reversal of 138068377 is 773860831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135745801 + 2322576 = 11651^2 + 1524^2 .

It is a cyclic number.

It is not a de Polignac number, because 138068377 - 2¹¹ = 138066329 is a prime.

It is not a weakly prime, because it can be changed into another prime (138068347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69034188 + 69034189.

It is an arithmetic number, because the mean of its divisors is an integer number (69034189).

Almost surely, 2^138068377 is an apocalyptic number.

It is an amenable number.

138068377 is a deficient number, since it is larger than the sum of its proper divisors (1).

138068377 is an equidigital number, since it uses as much as digits as its factorization.

138068377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 138068377 is about 11750.2500824451. The cubic root of 138068377 is about 516.8502609874.

The spelling of 138068377 in words is "one hundred thirty-eight million, sixty-eight thousand, three hundred seventy-seven".