138706153 has 2 divisors, whose sum is σ = 138706154. Its totient is φ = 138706152.

The previous prime is 138706103. The next prime is 138706163. The reversal of 138706153 is 351607831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114233344 + 24472809 = 10688^2 + 4947^2 .

It is a cyclic number.

It is not a de Polignac number, because 138706153 - 2⁹ = 138705641 is a prime.

It is not a weakly prime, because it can be changed into another prime (138706103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69353076 + 69353077.

It is an arithmetic number, because the mean of its divisors is an integer number (69353077).

Almost surely, 2^138706153 is an apocalyptic number.

It is an amenable number.

138706153 is a deficient number, since it is larger than the sum of its proper divisors (1).

138706153 is an equidigital number, since it uses as much as digits as its factorization.

138706153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 138706153 is about 11777.3576408293. The cubic root of 138706153 is about 517.6448634875.

The spelling of 138706153 in words is "one hundred thirty-eight million, seven hundred six thousand, one hundred fifty-three".