194243900 has 72 divisors (see below), whose sum is σ = 435388800. Its totient is φ = 75176640.

The previous prime is 194243899. The next prime is 194243939. The reversal of 194243900 is 9342491.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 855587 + ... + 855813.

Almost surely, 2^194243900 is an apocalyptic number.

194243900 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 194243900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217694400).

194243900 is an abundant number, since it is smaller than the sum of its proper divisors (241144900).

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

194243900 is a wasteful number, since it uses less digits than its factorization.

194243900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483 (or 476 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 194243900 is about 13937.1410267673. The cubic root of 194243900 is about 579.1385348262.

The spelling of 194243900 in words is "one hundred ninety-four million, two hundred forty-three thousand, nine hundred".