138184873 has 4 divisors (see below), whose sum is σ = 138256000. Its totient is φ = 138113748.

The previous prime is 138184817. The next prime is 138184877. The reversal of 138184873 is 378481831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 138184873 - 2¹⁷ = 138053801 is a prime.

It is a super-2 number, since 2×138184873² = 38190118252052258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138184877) 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 in 3 ways as a sum of consecutive naturals, for example, 32565 + ... + 36562.

It is an arithmetic number, because the mean of its divisors is an integer number (34564000).

Almost surely, 2^138184873 is an apocalyptic number.

It is an amenable number.

138184873 is a deficient number, since it is larger than the sum of its proper divisors (71127).

138184873 is an equidigital number, since it uses as much as digits as its factorization.

138184873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71126.

The product of its digits is 129024, while the sum is 43.

The square root of 138184873 is about 11755.2062083147. The cubic root of 138184873 is about 516.9955852651.

The spelling of 138184873 in words is "one hundred thirty-eight million, one hundred eighty-four thousand, eight hundred seventy-three".