138780133 has 2 divisors, whose sum is σ = 138780134. Its totient is φ = 138780132.

The previous prime is 138780127. The next prime is 138780151. The reversal of 138780133 is 331087831.

138780133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118004769 + 20775364 = 10863^2 + 4558^2 .

It is a cyclic number.

It is not a de Polignac number, because 138780133 - 2⁵ = 138780101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138780533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69390066 + 69390067.

It is an arithmetic number, because the mean of its divisors is an integer number (69390067).

Almost surely, 2^138780133 is an apocalyptic number.

It is an amenable number.

138780133 is a deficient number, since it is larger than the sum of its proper divisors (1).

138780133 is an equidigital number, since it uses as much as digits as its factorization.

138780133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 138780133 is about 11780.4979945671. The cubic root of 138780133 is about 517.7368770952.

The spelling of 138780133 in words is "one hundred thirty-eight million, seven hundred eighty thousand, one hundred thirty-three".