138184849 has 8 divisors (see below), whose sum is σ = 151425792. Its totient is φ = 125057040.

The previous prime is 138184817. The next prime is 138184877. The reversal of 138184849 is 948481831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 138184849 - 2⁵ = 138184817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 138184799 and 138184808.

It is not an unprimeable number, because it can be changed into a prime (138184889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25714 + ... + 30619.

It is an arithmetic number, because the mean of its divisors is an integer number (18928224).

Almost surely, 2^138184849 is an apocalyptic number.

It is an amenable number.

138184849 is a deficient number, since it is larger than the sum of its proper divisors (13240943).

138184849 is a wasteful number, since it uses less digits than its factorization.

138184849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56567.

The product of its digits is 221184, while the sum is 46.

The square root of 138184849 is about 11755.2051874903. The cubic root of 138184849 is about 516.9955553344.

The spelling of 138184849 in words is "one hundred thirty-eight million, one hundred eighty-four thousand, eight hundred forty-nine".