194431838 has 8 divisors (see below), whose sum is σ = 291732840. Its totient is φ = 97187560.

The previous prime is 194431837. The next prime is 194431841. The reversal of 194431838 is 838134491.

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

It is a junction number, because it is equal to n+sod(n) for n = 194431795 and 194431804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194431837) by changing a digit.

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, 4208 + ... + 20163.

It is an arithmetic number, because the mean of its divisors is an integer number (36466605).

Almost surely, 2^194431838 is an apocalyptic number.

194431838 is a deficient number, since it is larger than the sum of its proper divisors (97301002).

194431838 is a wasteful number, since it uses less digits than its factorization.

194431838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28362.

The product of its digits is 82944, while the sum is 41.

The square root of 194431838 is about 13943.8817407492. The cubic root of 194431838 is about 579.3252537809.

The spelling of 194431838 in words is "one hundred ninety-four million, four hundred thirty-one thousand, eight hundred thirty-eight".