138489083 has 4 divisors (see below), whose sum is σ = 138838320. Its totient is φ = 138139848.

The previous prime is 138489019. The next prime is 138489097. The reversal of 138489083 is 380984831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 138489083 - 2⁶ = 138489019 is a prime.

It is a super-2 number, since 2×138489083² = 38358452220361778, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138479083) 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 in 3 ways as a sum of consecutive naturals, for example, 174023 + ... + 174816.

It is an arithmetic number, because the mean of its divisors is an integer number (34709580).

Almost surely, 2^138489083 is an apocalyptic number.

138489083 is a deficient number, since it is larger than the sum of its proper divisors (349237).

138489083 is an equidigital number, since it uses as much as digits as its factorization.

138489083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349236.

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 138489083 is about 11768.1384679141. The cubic root of 138489083 is about 517.3746908122.

The spelling of 138489083 in words is "one hundred thirty-eight million, four hundred eighty-nine thousand, eighty-three".