194289005 has 16 divisors (see below), whose sum is σ = 247587840. Its totient is φ = 145857792.

The previous prime is 194289001. The next prime is 194289013. The reversal of 194289005 is 500982491.

It is a cyclic number.

It is not a de Polignac number, because 194289005 - 2² = 194289001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 194289005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194289001) 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, 27332 + ... + 33698.

It is an arithmetic number, because the mean of its divisors is an integer number (15474240).

Almost surely, 2^194289005 is an apocalyptic number.

It is an amenable number.

194289005 is a deficient number, since it is larger than the sum of its proper divisors (53298835).

194289005 is a wasteful number, since it uses less digits than its factorization.

194289005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6748.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 194289005 is about 13938.7590911099. The cubic root of 194289005 is about 579.1833582363.

The spelling of 194289005 in words is "one hundred ninety-four million, two hundred eighty-nine thousand, five".