138184138 has 16 divisors (see below), whose sum is σ = 216538560. Its totient is φ = 66011616.

The previous prime is 138184099. The next prime is 138184141. The reversal of 138184138 is 831481831.

It is a junction number, because it is equal to n+sod(n) for n = 138184097 and 138184106.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73081 + ... + 74947.

It is an arithmetic number, because the mean of its divisors is an integer number (13533660).

Almost surely, 2^138184138 is an apocalyptic number.

138184138 is a deficient number, since it is larger than the sum of its proper divisors (78354422).

138184138 is a wasteful number, since it uses less digits than its factorization.

138184138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3501.

The product of its digits is 18432, while the sum is 37.

The square root of 138184138 is about 11755.1749455293. The cubic root of 138184138 is about 516.9946686370.

It can be divided in two parts, 13818 and 4138, that added together give a square (17956 = 134²).

The spelling of 138184138 in words is "one hundred thirty-eight million, one hundred eighty-four thousand, one hundred thirty-eight".