138014791 has 2 divisors, whose sum is σ = 138014792. Its totient is φ = 138014790.

The previous prime is 138014777. The next prime is 138014813. The reversal of 138014791 is 197410831.

It is a weak prime.

It is an emirp because it is prime and its reverse (197410831) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138014791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138014711) 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, 69007395 + 69007396.

It is an arithmetic number, because the mean of its divisors is an integer number (69007396).

Almost surely, 2^138014791 is an apocalyptic number.

138014791 is a deficient number, since it is larger than the sum of its proper divisors (1).

138014791 is an equidigital number, since it uses as much as digits as its factorization.

138014791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 138014791 is about 11747.9696543701. The cubic root of 138014791 is about 516.7833870647.

The spelling of 138014791 in words is "one hundred thirty-eight million, fourteen thousand, seven hundred ninety-one".