234185638 has 8 divisors (see below), whose sum is σ = 352001232. Its totient is φ = 116851896.

The previous prime is 234185599. The next prime is 234185647. The reversal of 234185638 is 836581432.

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

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 234185638.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119245 + ... + 121192.

It is an arithmetic number, because the mean of its divisors is an integer number (44000154).

Almost surely, 2^234185638 is an apocalyptic number.

234185638 is a deficient number, since it is larger than the sum of its proper divisors (117815594).

234185638 is a wasteful number, since it uses less digits than its factorization.

234185638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240926.

The product of its digits is 138240, while the sum is 40.

The square root of 234185638 is about 15303.1251056769. The cubic root of 234185638 is about 616.3869269634.

The spelling of 234185638 in words is "two hundred thirty-four million, one hundred eighty-five thousand, six hundred thirty-eight".