194000000 has 112 divisors (see below), whose sum is σ = 488079690. Its totient is φ = 76800000.

The previous prime is 193999979. The next prime is 194000011. The reversal of 194000000 is 491.

It can be written as a sum of positive squares in 7 ways, for example, as 108326464 + 85673536 = 10408^2 + 9256^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 1999952 + ... + 2000048.

Almost surely, 2^194000000 is an apocalyptic number.

194000000 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 194000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244039845).

194000000 is an abundant number, since it is smaller than the sum of its proper divisors (294079690).

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

194000000 is an frugal number, since it uses more digits than its factorization.

194000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 194000000 is about 13928.3882771841. The cubic root of 194000000 is about 578.8960372062.

Adding to 194000000 its reverse (491), we get a palindrome (194000491).

The spelling of 194000000 in words is "one hundred ninety-four million", and thus it is an aban number.