194426809000 has 32 divisors (see below), whose sum is σ = 454958735400. Its totient is φ = 77770723200.

The previous prime is 194426808997. The next prime is 194426809067. The reversal of 194426809000 is 908624491.

194426809000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 25668525796 + 168758283204 = 160214^2 + 410802^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97212405 + ... + 97214404.

Almost surely, 2^194426809000 is an apocalyptic number.

194426809000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

194426809000 is an abundant number, since it is smaller than the sum of its proper divisors (260531926400).

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

194426809000 is a wasteful number, since it uses less digits than its factorization.

194426809000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194426830 (or 194426816 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The spelling of 194426809000 in words is "one hundred ninety-four billion, four hundred twenty-six million, eight hundred nine thousand".