194539438 has 8 divisors (see below), whose sum is σ = 291977640. Its totient is φ = 97213560.

The previous prime is 194539427. The next prime is 194539459. The reversal of 194539438 is 834935491.

It is a happy number.

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

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, 23608 + ... + 30763.

It is an arithmetic number, because the mean of its divisors is an integer number (36497205).

Almost surely, 2^194539438 is an apocalyptic number.

194539438 is a deficient number, since it is larger than the sum of its proper divisors (97438202).

194539438 is a wasteful number, since it uses less digits than its factorization.

194539438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56162.

The product of its digits is 466560, while the sum is 46.

The square root of 194539438 is about 13947.7395301174. The cubic root of 194539438 is about 579.4321016829.

The spelling of 194539438 in words is "one hundred ninety-four million, five hundred thirty-nine thousand, four hundred thirty-eight".