194808911 has 6 divisors (see below), whose sum is σ = 214128936. Its totient is φ = 177098900.

The previous prime is 194808893. The next prime is 194808941. The reversal of 194808911 is 119808491.

It is not a de Polignac number, because 194808911 - 2¹⁰ = 194807887 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 (194808941) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 804875 + ... + 805116.

It is an arithmetic number, because the mean of its divisors is an integer number (35688156).

Almost surely, 2^194808911 is an apocalyptic number.

194808911 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

194808911 is a deficient number, since it is larger than the sum of its proper divisors (19320025).

194808911 is a wasteful number, since it uses less digits than its factorization.

194808911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1610013 (or 1610002 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 41.

The square root of 194808911 is about 13957.3962829748. The cubic root of 194808911 is about 579.6995183550.

The spelling of 194808911 in words is "one hundred ninety-four million, eight hundred eight thousand, nine hundred eleven".