194117090 has 16 divisors (see below), whose sum is σ = 354627072. Its totient is φ = 76487664.

The previous prime is 194117089. The next prime is 194117113. The reversal of 194117090 is 90711491.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144194 + ... + 145533.

It is an arithmetic number, because the mean of its divisors is an integer number (22164192).

Almost surely, 2^194117090 is an apocalyptic number.

194117090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

194117090 is a deficient number, since it is larger than the sum of its proper divisors (160509982).

194117090 is a wasteful number, since it uses less digits than its factorization.

194117090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289801.

The product of its (nonzero) digits is 2268, while the sum is 32.

The square root of 194117090 is about 13932.5909291847. The cubic root of 194117090 is about 579.0124793104.

The spelling of 194117090 in words is "one hundred ninety-four million, one hundred seventeen thousand, ninety".