194910081 has 16 divisors (see below), whose sum is σ = 265883904. Its totient is φ = 126948224.

The previous prime is 194910061. The next prime is 194910091. The reversal of 194910081 is 180019491.

194910081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 194910081 - 2⁶ = 194910017 is a prime.

It is a super-2 number, since 2×194910081² = 75979879350853122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (194910061) 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, 120031 + ... + 121643.

It is an arithmetic number, because the mean of its divisors is an integer number (16617744).

Almost surely, 2^194910081 is an apocalyptic number.

It is an amenable number.

194910081 is a deficient number, since it is larger than the sum of its proper divisors (70973823).

194910081 is a wasteful number, since it uses less digits than its factorization.

194910081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2520.

The product of its (nonzero) digits is 2592, while the sum is 33.

The square root of 194910081 is about 13961.0200558555. The cubic root of 194910081 is about 579.7998526610.

The spelling of 194910081 in words is "one hundred ninety-four million, nine hundred ten thousand, eighty-one".