194740219 has 4 divisors (see below), whose sum is σ = 206195544. Its totient is φ = 183284896.

The previous prime is 194740199. The next prime is 194740229. The reversal of 194740219 is 912047491.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 194740219 - 2⁵ = 194740187 is a prime.

It is a super-2 number, since 2×194740219² = 75847505792335922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194740229) 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, 5727637 + ... + 5727670.

It is an arithmetic number, because the mean of its divisors is an integer number (51548886).

Almost surely, 2^194740219 is an apocalyptic number.

194740219 is a deficient number, since it is larger than the sum of its proper divisors (11455325).

194740219 is a wasteful number, since it uses less digits than its factorization.

194740219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11455324.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 194740219 is about 13954.9352918600. The cubic root of 194740219 is about 579.6313739694.

The spelling of 194740219 in words is "one hundred ninety-four million, seven hundred forty thousand, two hundred nineteen".