138794311 has 2 divisors, whose sum is σ = 138794312. Its totient is φ = 138794310.

The previous prime is 138794309. The next prime is 138794317. The reversal of 138794311 is 113497831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138794311 - 2¹ = 138794309 is a prime.

Together with 138794309, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138794317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69397155 + 69397156.

It is an arithmetic number, because the mean of its divisors is an integer number (69397156).

Almost surely, 2^138794311 is an apocalyptic number.

138794311 is a deficient number, since it is larger than the sum of its proper divisors (1).

138794311 is an equidigital number, since it uses as much as digits as its factorization.

138794311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 37.

The square root of 138794311 is about 11781.0997364423. The cubic root of 138794311 is about 517.7545074369.

The spelling of 138794311 in words is "one hundred thirty-eight million, seven hundred ninety-four thousand, three hundred eleven".