138113903 has 2 divisors, whose sum is σ = 138113904. Its totient is φ = 138113902.

The previous prime is 138113891. The next prime is 138113923. The reversal of 138113903 is 309311831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138113903 - 2¹⁶ = 138048367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138113923) 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, 69056951 + 69056952.

It is an arithmetic number, because the mean of its divisors is an integer number (69056952).

Almost surely, 2^138113903 is an apocalyptic number.

138113903 is a deficient number, since it is larger than the sum of its proper divisors (1).

138113903 is an equidigital number, since it uses as much as digits as its factorization.

138113903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 138113903 is about 11752.1871581421. The cubic root of 138113903 is about 516.9070626479.

The spelling of 138113903 in words is "one hundred thirty-eight million, one hundred thirteen thousand, nine hundred three".