138338467 has 2 divisors, whose sum is σ = 138338468. Its totient is φ = 138338466.

The previous prime is 138338441. The next prime is 138338477. The reversal of 138338467 is 764833831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 138338467 - 2⁷ = 138338339 is a prime.

It is not a weakly prime, because it can be changed into another prime (138338407) 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, 69169233 + 69169234.

It is an arithmetic number, because the mean of its divisors is an integer number (69169234).

Almost surely, 2^138338467 is an apocalyptic number.

138338467 is a deficient number, since it is larger than the sum of its proper divisors (1).

138338467 is an equidigital number, since it uses as much as digits as its factorization.

138338467 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 43.

The square root of 138338467 is about 11761.7374141748. The cubic root of 138338467 is about 517.1870630914.

The spelling of 138338467 in words is "one hundred thirty-eight million, three hundred thirty-eight thousand, four hundred sixty-seven".