194257838 has 8 divisors (see below), whose sum is σ = 294060360. Its totient is φ = 96237720.

The previous prime is 194257837. The next prime is 194257853. The reversal of 194257838 is 838752491.

It is a happy number.

194257838 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×194257838² = 75472215248868488, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 194257792 and 194257801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194257831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 445328 + ... + 445763.

It is an arithmetic number, because the mean of its divisors is an integer number (36757545).

Almost surely, 2^194257838 is an apocalyptic number.

194257838 is a deficient number, since it is larger than the sum of its proper divisors (99802522).

194257838 is a wasteful number, since it uses less digits than its factorization.

194257838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891202.

The product of its digits is 483840, while the sum is 47.

The square root of 194257838 is about 13937.6410486136. The cubic root of 194257838 is about 579.1523865522.

The spelling of 194257838 in words is "one hundred ninety-four million, two hundred fifty-seven thousand, eight hundred thirty-eight".