138081833 has 2 divisors, whose sum is σ = 138081834. Its totient is φ = 138081832.

The previous prime is 138081787. The next prime is 138081851. The reversal of 138081833 is 338180831.

138081833 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130942249 + 7139584 = 11443^2 + 2672^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138081833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138081793 and 138081802.

It is not a weakly prime, because it can be changed into another prime (138081883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69040916 + 69040917.

It is an arithmetic number, because the mean of its divisors is an integer number (69040917).

Almost surely, 2^138081833 is an apocalyptic number.

It is an amenable number.

138081833 is a deficient number, since it is larger than the sum of its proper divisors (1).

138081833 is an equidigital number, since it uses as much as digits as its factorization.

138081833 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 138081833 is about 11750.8226520529. The cubic root of 138081833 is about 516.8670510044.

The spelling of 138081833 in words is "one hundred thirty-eight million, eighty-one thousand, eight hundred thirty-three".