138274607 has 2 divisors, whose sum is σ = 138274608. Its totient is φ = 138274606.

The previous prime is 138274603. The next prime is 138274613. The reversal of 138274607 is 706472831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138274607 - 2² = 138274603 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138274603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69137303 + 69137304.

It is an arithmetic number, because the mean of its divisors is an integer number (69137304).

Almost surely, 2^138274607 is an apocalyptic number.

138274607 is a deficient number, since it is larger than the sum of its proper divisors (1).

138274607 is an equidigital number, since it uses as much as digits as its factorization.

138274607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 138274607 is about 11759.0223658262. The cubic root of 138274607 is about 517.1074693001.

The spelling of 138274607 in words is "one hundred thirty-eight million, two hundred seventy-four thousand, six hundred seven".