194790505 has 32 divisors (see below), whose sum is σ = 304625664. Its totient is φ = 116038656.

The previous prime is 194790503. The next prime is 194790509. The reversal of 194790505 is 505097491.

It is a cyclic number.

It is not a de Polignac number, because 194790505 - 2¹ = 194790503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (194790503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4857 + ... + 20326.

It is an arithmetic number, because the mean of its divisors is an integer number (9519552).

Almost surely, 2^194790505 is an apocalyptic number.

It is an amenable number.

194790505 is a deficient number, since it is larger than the sum of its proper divisors (109835159).

194790505 is a wasteful number, since it uses less digits than its factorization.

194790505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25225.

The product of its (nonzero) digits is 56700, while the sum is 40.

The square root of 194790505 is about 13956.7369037322. The cubic root of 194790505 is about 579.6812606594.

The spelling of 194790505 in words is "one hundred ninety-four million, seven hundred ninety thousand, five hundred five".