194981894 has 8 divisors (see below), whose sum is σ = 292782600. Its totient is φ = 97387696.

The previous prime is 194981893. The next prime is 194981903. The reversal of 194981894 is 498189491.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194981893) by changing a digit.

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, 49244 + ... + 53055.

It is an arithmetic number, because the mean of its divisors is an integer number (36597825).

Almost surely, 2^194981894 is an apocalyptic number.

194981894 is a deficient number, since it is larger than the sum of its proper divisors (97800706).

194981894 is a wasteful number, since it uses less digits than its factorization.

194981894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103254.

The product of its digits is 746496, while the sum is 53.

The square root of 194981894 is about 13963.5917299239. The cubic root of 194981894 is about 579.8710513970.

The spelling of 194981894 in words is "one hundred ninety-four million, nine hundred eighty-one thousand, eight hundred ninety-four".