138548023 has 2 divisors, whose sum is σ = 138548024. Its totient is φ = 138548022.

The previous prime is 138547973. The next prime is 138548029. The reversal of 138548023 is 320845831.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 138548023 - 2⁹ = 138547511 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 138548023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138548029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69274011 + 69274012.

It is an arithmetic number, because the mean of its divisors is an integer number (69274012).

Almost surely, 2^138548023 is an apocalyptic number.

138548023 is a deficient number, since it is larger than the sum of its proper divisors (1).

138548023 is an equidigital number, since it uses as much as digits as its factorization.

138548023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 138548023 is about 11770.6424208707. The cubic root of 138548023 is about 517.4480774374.

The spelling of 138548023 in words is "one hundred thirty-eight million, five hundred forty-eight thousand, twenty-three".