138261301 has 2 divisors, whose sum is σ = 138261302. Its totient is φ = 138261300.

The previous prime is 138261293. The next prime is 138261371. The reversal of 138261301 is 103162831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103510276 + 34751025 = 10174^2 + 5895^2 .

It is a cyclic number.

It is not a de Polignac number, because 138261301 - 2³ = 138261293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138261371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69130650 + 69130651.

It is an arithmetic number, because the mean of its divisors is an integer number (69130651).

Almost surely, 2^138261301 is an apocalyptic number.

It is an amenable number.

138261301 is a deficient number, since it is larger than the sum of its proper divisors (1).

138261301 is an equidigital number, since it uses as much as digits as its factorization.

138261301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 138261301 is about 11758.4565738876. The cubic root of 138261301 is about 517.0908818903.

The spelling of 138261301 in words is "one hundred thirty-eight million, two hundred sixty-one thousand, three hundred one".