194381900 has 18 divisors (see below), whose sum is σ = 421808940. Its totient is φ = 77752720.

The previous prime is 194381897. The next prime is 194381911. The reversal of 194381900 is 9183491.

It is a super-2 number, since 2×194381900² = 75568646095220000, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 971810 + ... + 972009.

It is an arithmetic number, because the mean of its divisors is an integer number (23433830).

Almost surely, 2^194381900 is an apocalyptic number.

194381900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

194381900 is an abundant number, since it is smaller than the sum of its proper divisors (227427040).

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

194381900 is a wasteful number, since it uses less digits than its factorization.

194381900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1943833 (or 1943826 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 194381900 is about 13942.0909479174. The cubic root of 194381900 is about 579.2756514421.

The spelling of 194381900 in words is "one hundred ninety-four million, three hundred eighty-one thousand, nine hundred".