138184079 has 8 divisors (see below), whose sum is σ = 152211072. Its totient is φ = 124401240.

The previous prime is 138184061. The next prime is 138184087. The reversal of 138184079 is 970481831.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138184079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138184009) 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 7 ways as a sum of consecutive naturals, for example, 59849 + ... + 62114.

It is an arithmetic number, because the mean of its divisors is an integer number (19026384).

Almost surely, 2^138184079 is an apocalyptic number.

138184079 is a deficient number, since it is larger than the sum of its proper divisors (14026993).

138184079 is a wasteful number, since it uses less digits than its factorization.

138184079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122077.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 138184079 is about 11755.1724359960. The cubic root of 138184079 is about 516.9945950571.

The spelling of 138184079 in words is "one hundred thirty-eight million, one hundred eighty-four thousand, seventy-nine".