194478630 has 16 divisors (see below), whose sum is σ = 466748784. Its totient is φ = 51860960.

The previous prime is 194478629. The next prime is 194478649. The reversal of 194478630 is 36874491.

It is a congruent number.

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, 3241281 + ... + 3241340.

It is an arithmetic number, because the mean of its divisors is an integer number (29171799).

Almost surely, 2^194478630 is an apocalyptic number.

194478630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

194478630 is an abundant number, since it is smaller than the sum of its proper divisors (272270154).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

194478630 is a wasteful number, since it uses less digits than its factorization.

194478630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6482631.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 194478630 is about 13945.5595083166. The cubic root of 194478630 is about 579.3717235588.

The spelling of 194478630 in words is "one hundred ninety-four million, four hundred seventy-eight thousand, six hundred thirty".