194916189 has 16 divisors (see below), whose sum is σ = 288909824. Its totient is φ = 116078400.

The previous prime is 194916181. The next prime is 194916209. The reversal of 194916189 is 981619491.

It is a happy number.

It is not a de Polignac number, because 194916189 - 2³ = 194916181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194916181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79402 + ... + 81819.

It is an arithmetic number, because the mean of its divisors is an integer number (18056864).

Almost surely, 2^194916189 is an apocalyptic number.

It is an amenable number.

194916189 is a deficient number, since it is larger than the sum of its proper divisors (93993635).

194916189 is a wasteful number, since it uses less digits than its factorization.

194916189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161268.

The product of its digits is 139968, while the sum is 48.

The square root of 194916189 is about 13961.2388060659. The cubic root of 194916189 is about 579.8059090956.

The spelling of 194916189 in words is "one hundred ninety-four million, nine hundred sixteen thousand, one hundred eighty-nine".