138575093 has 2 divisors, whose sum is σ = 138575094. Its totient is φ = 138575092.

The previous prime is 138575071. The next prime is 138575117. The reversal of 138575093 is 390575831.

It is a happy number.

138575093 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., 106956964 + 31618129 = 10342^2 + 5623^2 .

It is an emirp because it is prime and its reverse (390575831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 138575093 - 2¹⁰ = 138574069 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 138575093.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138575033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69287546 + 69287547.

It is an arithmetic number, because the mean of its divisors is an integer number (69287547).

Almost surely, 2^138575093 is an apocalyptic number.

It is an amenable number.

138575093 is a deficient number, since it is larger than the sum of its proper divisors (1).

138575093 is an equidigital number, since it uses as much as digits as its factorization.

138575093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 113400, while the sum is 41.

The square root of 138575093 is about 11771.7922594650. The cubic root of 138575093 is about 517.4817755179.

The spelling of 138575093 in words is "one hundred thirty-eight million, five hundred seventy-five thousand, ninety-three".