138056629 has 2 divisors, whose sum is σ = 138056630. Its totient is φ = 138056628.

The previous prime is 138056621. The next prime is 138056663. The reversal of 138056629 is 926650831.

138056629 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., 112402404 + 25654225 = 10602^2 + 5065^2 .

It is a cyclic number.

It is not a de Polignac number, because 138056629 - 2³ = 138056621 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 138056591 and 138056600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138056621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69028314 + 69028315.

It is an arithmetic number, because the mean of its divisors is an integer number (69028315).

Almost surely, 2^138056629 is an apocalyptic number.

It is an amenable number.

138056629 is a deficient number, since it is larger than the sum of its proper divisors (1).

138056629 is an equidigital number, since it uses as much as digits as its factorization.

138056629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 138056629 is about 11749.7501675568. The cubic root of 138056629 is about 516.8356012726.

The spelling of 138056629 in words is "one hundred thirty-eight million, fifty-six thousand, six hundred twenty-nine".