194132138 has 16 divisors (see below), whose sum is σ = 293700480. Its totient is φ = 96235776.

The previous prime is 194132117. The next prime is 194132153. The reversal of 194132138 is 831231491.

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 7 ways as a sum of consecutive naturals, for example, 145631 + ... + 146957.

It is an arithmetic number, because the mean of its divisors is an integer number (18356280).

Almost surely, 2^194132138 is an apocalyptic number.

194132138 is a deficient number, since it is larger than the sum of its proper divisors (99568342).

194132138 is a wasteful number, since it uses less digits than its factorization.

194132138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1901.

The product of its digits is 5184, while the sum is 32.

The square root of 194132138 is about 13933.1309474935. The cubic root of 194132138 is about 579.0274406492.

The spelling of 194132138 in words is "one hundred ninety-four million, one hundred thirty-two thousand, one hundred thirty-eight".