194549138 has 8 divisors (see below), whose sum is σ = 333512832. Its totient is φ = 83378196.

The previous prime is 194549119. The next prime is 194549153. The reversal of 194549138 is 831945491.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6948170 + ... + 6948197.

It is an arithmetic number, because the mean of its divisors is an integer number (41689104).

Almost surely, 2^194549138 is an apocalyptic number.

194549138 is a deficient number, since it is larger than the sum of its proper divisors (138963694).

194549138 is a wasteful number, since it uses less digits than its factorization.

194549138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13896376.

The product of its digits is 155520, while the sum is 44.

The square root of 194549138 is about 13948.0872523798. The cubic root of 194549138 is about 579.4417319461.

The spelling of 194549138 in words is "one hundred ninety-four million, five hundred forty-nine thousand, one hundred thirty-eight".