194455900 has 36 divisors (see below), whose sum is σ = 426340768. Its totient is φ = 76976640.

The previous prime is 194455883. The next prime is 194455927. The reversal of 194455900 is 9554491.

It is a self number, because there is not a number n which added to its sum of digits gives 194455900.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 324 + ... + 19723.

Almost surely, 2^194455900 is an apocalyptic number.

194455900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194455900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213170384).

194455900 is an abundant number, since it is smaller than the sum of its proper divisors (231884868).

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

194455900 is a wasteful number, since it uses less digits than its factorization.

194455900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20158 (or 20151 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 194455900 is about 13944.7445297503. The cubic root of 194455900 is about 579.3491510147.

The spelling of 194455900 in words is "one hundred ninety-four million, four hundred fifty-five thousand, nine hundred".