138184870 has 8 divisors (see below), whose sum is σ = 248732784. Its totient is φ = 55273944.

The previous prime is 138184817. The next prime is 138184877. The reversal of 138184870 is 78481831.

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

It is a congruent 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, 6909234 + ... + 6909253.

It is an arithmetic number, because the mean of its divisors is an integer number (31091598).

Almost surely, 2^138184870 is an apocalyptic number.

138184870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138184870 is a deficient number, since it is larger than the sum of its proper divisors (110547914).

138184870 is a wasteful number, since it uses less digits than its factorization.

138184870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13818494.

The product of its (nonzero) digits is 43008, while the sum is 40.

The square root of 138184870 is about 11755.2060807116. The cubic root of 138184870 is about 516.9955815238.

The spelling of 138184870 in words is "one hundred thirty-eight million, one hundred eighty-four thousand, eight hundred seventy".