138582923 has 2 divisors, whose sum is σ = 138582924. Its totient is φ = 138582922.

The previous prime is 138582907. The next prime is 138582943. The reversal of 138582923 is 329285831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138582923 - 2⁴ = 138582907 is a prime.

It is not a weakly prime, because it can be changed into another prime (138582943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69291461 + 69291462.

It is an arithmetic number, because the mean of its divisors is an integer number (69291462).

Almost surely, 2^138582923 is an apocalyptic number.

138582923 is a deficient number, since it is larger than the sum of its proper divisors (1).

138582923 is an equidigital number, since it uses as much as digits as its factorization.

138582923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 41.

The square root of 138582923 is about 11772.1248294435. The cubic root of 138582923 is about 517.4915218725.

The spelling of 138582923 in words is "one hundred thirty-eight million, five hundred eighty-two thousand, nine hundred twenty-three".