68184138 has 32 divisors (see below), whose sum is σ = 149065920. Its totient is φ = 20620160.

The previous prime is 68184131. The next prime is 68184139. The reversal of 68184138 is 83148186.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 68184096 and 68184105.

It is not an unprimeable number, because it can be changed into a prime (68184131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52756 + ... + 54032.

It is an arithmetic number, because the mean of its divisors is an integer number (4658310).

Almost surely, 2^68184138 is an apocalyptic number.

68184138 is an abundant number, since it is smaller than the sum of its proper divisors (80881782).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68184138 is a wasteful number, since it uses less digits than its factorization.

68184138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2102.

The product of its digits is 36864, while the sum is 39.

The square root of 68184138 is about 8257.3687092197. The cubic root of 68184138 is about 408.5336035323.

The spelling of 68184138 in words is "sixty-eight million, one hundred eighty-four thousand, one hundred thirty-eight".