210000194 has 8 divisors (see below), whose sum is σ = 325862460. Its totient is φ = 101379376.

The previous prime is 210000187. The next prime is 210000199. The reversal of 210000194 is 491000012.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 204061225 + 5938969 = 14285^2 + 2437^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (210000199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1810289 + ... + 1810404.

Almost surely, 2^210000194 is an apocalyptic number.

210000194 is a deficient number, since it is larger than the sum of its proper divisors (115862266).

210000194 is a wasteful number, since it uses less digits than its factorization.

210000194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3620724.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 210000194 is about 14491.3834398238. The cubic root of 210000194 is about 594.3923783113.

The spelling of 210000194 in words is "two hundred ten million, one hundred ninety-four", and thus it is an aban number.